Key Concept: Einstein’s Legacy

c) As a visionary, world citizen, and scientific genius.

[Solution Description]

When Einstein died in 1955, he was celebrated as a visionary and world citizen as much as a scientific genius.

Key Concept: Albert Einstein’s Achievements

c) Physics

[Solution Description]

Albert Einstein received the Nobel Prize in 1921 for his contributions to Physics.

Key Concept: Einstein’s Letter to Roosevelt, Nuclear Fission

b) He warned about nuclear fission, prompting the U.S. to develop atomic weapons.

[Solution Description]

In his 1939 letter to President Roosevelt, Einstein warned about the potential development of atomic bombs by Nazi Germany and urged the U.S. to initiate its own nuclear research. This led to the establishment of the Manhattan Project, resulting in the creation of the atomic bomb.

Key Concept: Atomic Bombing of Japan

b) Hiroshima and Nagasaki

[Solution Description]

The United States dropped atomic bombs on the Japanese cities of Hiroshima and Nagasaki in August 1945.

Key Concept: Einstein’s Second Marriage

b) Elsa Einstein

[Solution Description]

In 1919, after divorcing Mileva Maric, Einstein married his cousin Elsa. This marked the beginning of a new chapter in his personal life.

Key Concept: Concept: Energy-Mass Equivalence

b) The relationship between energy and mass

[Solution Description]

The equation $E = mc^2$ represents the relationship between energy ($E$) and mass ($m$), where $c$ is the speed of light in a vacuum. This equation shows that energy can be converted into mass and vice versa.

Key Concept: Einstein’s Special Theory of Relativity

c) The faster clock shows less time

[Solution Description]

According to Einstein’s Special Theory of Relativity, time and distance are not absolute. If two perfectly accurate clocks come together after a journey and one has been moving very fast relative to the other, they will not show the same time. This is due to the effect of time dilation in relativity.

Key Concept: Einstein’s Achievements

c) 1921

[Solution Description]

Albert Einstein received the Nobel Prize for Physics in 1921, recognizing his contributions to theoretical physics, particularly his explanation of the photoelectric effect.

Key Concept: Einstein’s advocacy for peace

c) To promote global harmony and prevent future wars

[Solution Description]

Einstein was deeply shaken by the extent of destruction caused by World War II, particularly the bombings of Hiroshima and Nagasaki. To prevent such devastation in the future, he proposed the formation of a world government in a public missive to the United Nations. His goal was to promote global harmony, reduce arms buildup, and ensure peace.

Key Concept: Einstein’s Special Theory of Relativity

c) Energy equals mass times the square of the speed of light

[Solution Description]

The equation $E = mc^2$ is one of Einstein’s most famous equations, which represents the relationship between mass and energy. Here, $E$ stands for energy, $m$ stands for mass, and $c$ stands for the speed of light in a vacuum.

Key Concept: Logical Reasoning

c) 3.75 hours

[Solution Description]

First, find the original speed of the train. Speed is calculated as distance divided by time. So, the original speed is $300 \text{ km} / 5 \text{ hours} = 60 \text{ km/h}$. Next, increase the speed by 20 km/h, which gives a new speed of $60 \text{ km/h} + 20 \text{ km/h} = 80 \text{ km/h}$. Finally, calculate the new time taken to cover 300 km at the new speed: $300 \text{ km} / 80 \text{ km/h} = 3.75 \text{ hours}$.

Key Concept: Einstein’s Letter to Roosevelt

b) To warn about the potential of an atomic bomb being developed by Germany

[Solution Description]

Einstein wrote the letter to warn President Franklin Roosevelt about the potential destructive power of an atomic bomb and the possibility of Germany developing such a weapon. He urged the U.S. to take action to prevent this from happening.

Key Concept: Einstein’s Rebellion

b) He felt stifled by the school’s regimentation

[Solution Description]

Einstein left his school in Munich because he felt stifled by the school\’s regimentation and often clashed with his teachers. This led him to withdraw from the school at the age of 15.

Key Concept: Early Life

b) 14 March 1879

[Solution Description]

Albert Einstein was born on 14 March 1879 in the German city of Ulm.

Key Concept: Imagery and Descriptive Writing

c) An open space with buzzing bees

[Solution Description]

The phrase “bee-loud glade” is used by the poet to describe a peaceful, open space filled with the sound of bees. This imagery creates a sense of natural tranquility and harmony, which the poet longs for at Innisfree.

Key Concept: Einstein’s Special Theory of Relativity

both Time and Distance

[Solution Description]

Einstein’s Special Theory of Relativity states that time and distance are not absolute. This means that two clocks moving at different speeds will show different times when they meet again after a journey.

Key Concept: Einstein’s Letter to Roosevelt

d) The destructive power of a single atomic bomb

[Solution Description]

In his letter, Einstein warned about the potential destructive power of a single atomic bomb, emphasizing that it could destroy an entire port and surrounding territory. This concern led to the initiation of the American atomic bomb project.

Key Concept: Einstein’s Education

b) 15 years

[Solution Description]

According to the syllabus, Albert Einstein left school in Munich at the age of 15. This is explicitly mentioned in the text.

Key Concept: Einstein’s Conflict with Teachers

b) He disliked the strict rules and regimented system.

[Solution Description]

The syllabus mentions that Einstein hated the school’s regimentation and often clashed with his teachers due to this reason.

Key Concept: Basic Concepts

c) Ulm

[Solution Description]

Albert Einstein was born on 14 March 1879 in the German city of Ulm.

Key Concept: Relationship

b) She was a fellow student

[Solution Description]

Einstein felt a special interest in Mileva Maric because he found her to be a “clever creature” and saw her as an ally against the “philistines,” people in his family and at the university with whom he was constantly at odds.

Key Concept: Basic Concepts

c) Mathematics and Physics

[Solution Description]

Einstein studied mathematics and physics at Zurich University, as mentioned in the syllabus.

Key Concept: Basic Concept

c) Ulm

[Solution Description]

Albert Einstein was born in the German city of Ulm, as mentioned in the syllabus.

Key Concept: Einstein’s Letter to Roosevelt

b) Franklin D. Roosevelt

[Solution Description] The syllabus mentions that Einstein wrote a letter to the American President, Franklin D. Roosevelt, on 2 August 1939, warning about the potential development of an atomic bomb.

Key Concept: Einstein’s Fame

c) An eclipse of the sun

[Solution Description]

An eclipse of the sun in 1919 brought proof that Einstein’s General Theory of Relativity was accurate. He had correctly calculated the extent to which the light from fixed stars would be deflected through the sun’s gravitational field.

Key Concept: Advocacy for Peace

c) He agitated for an end to the arms buildup and campaigned for peace

[Solution Description]

After writing the public missive, Einstein became more involved in politics, agitating for an end to the arms buildup and campaigning for peace and democracy using his popularity.

Key Concept: Participial Phrases

c) Playing the violin, Einstein maintained this skill throughout his life.

[Solution Description]

A participial phrase begins with an -ing verb and provides additional information about the subject or the main idea of the sentence. The correct sentence should include such a phrase to describe Einstein’s actions or state.

Key Concept: Historical Fact

c) 1902

[Solution Description]

According to the syllabus, Albert Einstein secured a job as a technical expert in the patent office in Bern in 1902.

Key Concept: Einstein’s General Theory of Relativity

c) Gravity

[Solution Description]

Einstein’s General Theory of Relativity, published in 1915, provided a new interpretation of gravity. It explained how massive objects cause a distortion in space-time, which we perceive as gravity.

Key Concept: Einstein’s Manuscript

b) An original handwritten manuscript of Einstein

[Solution Description]

In 2005, a student named Rowdy Boeynik unearthed an original handwritten manuscript of Albert Einstein at the University of the Netherlands. This 16-page document dated back to 1924 and contained Einstein’s work on the behavior of atoms at low temperature, now known as Bose-Einstein condensation.

Key Concept: Einstein’s Reaction to the Atomic Bomb

b) He was deeply shaken and proposed a world government

[Solution Description]

Einstein was deeply shaken by the extent of the destruction caused by the atomic bomb. This led him to write a public missive to the United Nations proposing the formation of a world government.

Key Concept: Albert Einstein’s Employment

c) Technical Expert in Patent Office

[Solution Description]

In 1902, Albert Einstein secured a job as a technical expert in the patent office in Bern.

Key Concept: Einstein’s Reaction to Atomic Bombing

b) To suggest the formation of a world government for peace

[Solution Description]

Einstein was deeply shaken by the destruction caused by the atomic bombings. He wrote a public missive to the United Nations proposing the formation of a world government to prevent such devastation in the future.

Key Concept: General Knowledge

c) Albert Einstein

[Solution Description]

Albert Einstein is widely regarded as the father of modern physics due to his groundbreaking contributions to the field, including the theory of relativity.

Key Concept: Divorce and Remarriage

c) 1919

[Solution Description]

Einstein divorced Mileva in 1919 and married his cousin Elsa the same year.

Key Concept: Einstein’s Opinions

a) His classmates

[Solution Description]

According to the syllabus, some people thought Einstein was a freak. This is mentioned in the context of opinions about Einstein.

Key Concept: Einstein’s Appearance

c) A dashing young man with the walrus moustache

[Solution Description]

Einstein is described as a “dashing young man with the walrus moustache” in 1900.

Key Concept: Einstein’s Achievements

c) Special Theory of Relativity

[Solution Description]

The equation $E = mc^2$ is part of Einstein’s Special Theory of Relativity, which he published in 1905. This is explicitly stated in the syllabus.

Key Concept: Einstein’s Advocacy for Peace

b) Establishment of a world government

[Solution Description]

Einstein was deeply shaken by the destruction caused during his time and proposed the formation of a world government in a public letter to the United Nations. This proposal aimed to promote peace and reduce the arms buildup globally.

Key Concept: Einstein\’s Early Education

c) Six

[Solution Description]

According to the text, Einstein began learning to play the violin at the age of six because his mother wanted him to.

Key Concept: Einstein’s Employment

c) Technical expert in the patent office

[Solution Description]

In 1902, Albert Einstein secured a job as a technical expert in the patent office in Bern. This is mentioned in the syllabus.

Key Concept: Late Speaking

c) Two-and-a-half years old

[Solution Description]

According to the syllabus, Einstein started speaking at the age of two-and-a-half.

Key Concept: Curiosity for Mechanical Toys

b) Fine, but where are her wheels?

[Solution Description]

Albert Einstein was known for his curiosity, especially for mechanical toys. When he saw his newborn sister Maja, he asked, “Fine, but where are her wheels?” This reflects his early fascination with mechanics and movement.

Key Concept: Einstein’s personal life

c) Einstein’s mother disapproved of the marriage

[Solution Description]

Einstein wanted to marry Mileva right after finishing his studies, but his mother was against it. She thought Mileva was too old for him and was bothered by her intelligence, which led Einstein to delay the wedding.

Key Concept: Nobel Prize Recognition

c) 1921

[Solution Description]

Albert Einstein received the Nobel Prize for Physics in 1921. This is a well-documented historical fact.

Key Concept: Role of Scientists in Society

c) To warn about the potential of atomic bombs

[Solution Description]

Einstein wrote a letter to President Roosevelt in 1939 to warn him about the potential development and devastating effects of an atomic bomb. He highlighted that such a bomb could destroy an entire port and surrounding territory. This action reflects his awareness of the ethical responsibility scientists have regarding the application of their discoveries.

Key Concept: Discovery of Nuclear Fission

c) The discovery of nuclear fission

[Solution Description]

The syllabus mentions that five years after Einstein emigrated to the United States, the discovery of nuclear fission occurred in Berlin. Therefore, the correct answer is the discovery of nuclear fission.

Key Concept: Purpose of Einstein’s Letter

b) To warn about Germany’s potential development of an atomic bomb

[Solution Description]

The main purpose of Einstein’s letter to Franklin Roosevelt in 1939 was to warn him about the possibility of Germany developing an atomic bomb and to urge the United States to take action to prevent it.

Key Concept: Einstein’s Early Life

c) A headmaster

[Solution Description]

According to the syllabus, a headmaster once told Einstein’s father that he would never make a success at anything. This indicates that the headmaster had this opinion about Einstein.

Key Concept: Impact of Einstein’s Proposal

c) It made no impact

[Solution Description]

Einstein’s proposal for a world government made no significant impact when he wrote to the United Nations.

Key Concept: Einstein’s University Life

c) Zurich

[Solution Description] Albert Einstein decided to study at a university in Zurich after finishing school as he was highly gifted in mathematics and interested in physics.

Key Concept: Einstein’s Legacy

c) As a visionary who campaigned for peace and democracy.

[Solution Description]

Einstein is remembered as a visionary and world citizen who spoke against nuclear weapons and war, highlighting his commitment to global peace and security.

Key Concept: Anecdote Comprehension

c) The people didn’t understand Einstein but understood Chaplin

[Solution Description] According to the anecdote, Chaplin explained that the people were applauding Einstein because none of them understood him, and they were applauding Chaplin because everybody understood him. This shows the difference in how the public perceived their work.

Key Concept: Einstein’s Personal Life

c) 1903

[Solution Description]

According to the syllabus, Einstein married Mileva Maric in January 1903.

Key Concept: Nobel Prize Year

c) 1921

[Solution Description]

Albert Einstein won the Nobel Prize for Physics in 1921.

Key Concept: Basic Concept

b) 35

[Solution Description]

To find the product of 5 and 7, multiply the two numbers: $5 \times 7 = 35$.

Key Concept: Einstein’s Birth and Early Life

b) 1879

[Solution Description]

Albert Einstein was born on 14 March 1879 in the German city of Ulm.