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Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:
Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.
Reason : Nucleus present inside the atom is heavy.
- a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
- b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
- c)Assertion (A) is true but reason (R) is false.
- d)Assertion (A) is false but reason (R) is true.
Correct answer is option 'B'. Can you explain this answer?
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Direction: In the following questions, a statement of assertion (A) i...
Nucleus present inside the atom is heavy but small.
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Direction: In the following questions, a statement of assertion (A) i...
Assertion: In Rutherford's gold foil experiment, very few α-particles are deflected back.
Reason: Nucleus present inside the atom is heavy.
Explanation:
Rutherford's gold foil experiment was conducted to understand the structure of the atom. In this experiment, a beam of alpha particles (α-particles) was directed at a thin sheet of gold foil. The expected outcome was that the alpha particles would pass through the gold foil with little or no deflection, as per the prevailing model of the atom at that time, known as the Thomson's plum pudding model.
Understanding the Assertion:
The assertion states that very few α-particles are deflected back in Rutherford's gold foil experiment. This assertion is true because most of the α-particles passed straight through the gold foil without any deflection, as expected. However, a small fraction of the α-particles were deflected at large angles and even some were deflected back towards the source. This unexpected observation led to the discovery of the atomic nucleus.
Understanding the Reason:
The reason given states that the nucleus present inside the atom is heavy. This reason is also true. Rutherford proposed that atoms have a tiny, dense and positively charged core called the nucleus, which is responsible for deflecting the α-particles. The nucleus contains positively charged protons and uncharged neutrons, and it occupies a very small volume compared to the overall size of the atom. The mass of the nucleus is concentrated in this small volume, making it heavy compared to the surrounding space occupied by electrons.
Explanation of the Correct Answer:
The correct answer is option (B) - Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A). Although the reason given is true, it does not provide a complete explanation for the assertion. The deflection of α-particles in Rutherford's gold foil experiment was not solely due to the heaviness of the nucleus but rather due to the presence of a small, positively charged nucleus that caused the deflection. The heaviness of the nucleus played a role in the deflection but it is not the sole reason for the observed phenomenon.
Key Points:
- Rutherford's gold foil experiment involved directing a beam of α-particles at a thin sheet of gold foil.
- The expected outcome was that the α-particles would pass through the foil with little or no deflection.
- The assertion states that very few α-particles are deflected back, which is true.
- The reason states that the nucleus present inside the atom is heavy, which is also true.
- However, the reason does not provide a complete explanation for the assertion as the deflection is due to the presence of a small, positively charged nucleus and not solely due to the heaviness of the nucleus.
Reason: Nucleus present inside the atom is heavy.
Explanation:
Rutherford's gold foil experiment was conducted to understand the structure of the atom. In this experiment, a beam of alpha particles (α-particles) was directed at a thin sheet of gold foil. The expected outcome was that the alpha particles would pass through the gold foil with little or no deflection, as per the prevailing model of the atom at that time, known as the Thomson's plum pudding model.
Understanding the Assertion:
The assertion states that very few α-particles are deflected back in Rutherford's gold foil experiment. This assertion is true because most of the α-particles passed straight through the gold foil without any deflection, as expected. However, a small fraction of the α-particles were deflected at large angles and even some were deflected back towards the source. This unexpected observation led to the discovery of the atomic nucleus.
Understanding the Reason:
The reason given states that the nucleus present inside the atom is heavy. This reason is also true. Rutherford proposed that atoms have a tiny, dense and positively charged core called the nucleus, which is responsible for deflecting the α-particles. The nucleus contains positively charged protons and uncharged neutrons, and it occupies a very small volume compared to the overall size of the atom. The mass of the nucleus is concentrated in this small volume, making it heavy compared to the surrounding space occupied by electrons.
Explanation of the Correct Answer:
The correct answer is option (B) - Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A). Although the reason given is true, it does not provide a complete explanation for the assertion. The deflection of α-particles in Rutherford's gold foil experiment was not solely due to the heaviness of the nucleus but rather due to the presence of a small, positively charged nucleus that caused the deflection. The heaviness of the nucleus played a role in the deflection but it is not the sole reason for the observed phenomenon.
Key Points:
- Rutherford's gold foil experiment involved directing a beam of α-particles at a thin sheet of gold foil.
- The expected outcome was that the α-particles would pass through the foil with little or no deflection.
- The assertion states that very few α-particles are deflected back, which is true.
- The reason states that the nucleus present inside the atom is heavy, which is also true.
- However, the reason does not provide a complete explanation for the assertion as the deflection is due to the presence of a small, positively charged nucleus and not solely due to the heaviness of the nucleus.
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Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer?
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Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer?.
Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer?.
Solutions for Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
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Here you can find the meaning of Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Direction: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:Assertion : In Rutherford’s gold foil experiment, very few α -particles are deflected back.Reason : Nucleus present inside the atom is heavy.a)Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).b)Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).c)Assertion (A) is true but reason (R) is false.d)Assertion (A) is false but reason (R) is true.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 9 tests.
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