Class 12 Exam  >  Class 12 Questions  >   Directions : In the following questions, A s... Start Learning for Free
Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
Assertion (A): Density of all the nuclei is same.
Reason (R): Radius of nucleus is directly proportional to the cube root of mass number.
  • a)
    Both A and R are true and R is the correct explanation of A
  • b)
    Both A and R are true but R is NOT the correct explanation of A
  • c)
    A is true but R is false
  • d)
    A is false and R is true
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Directions : In the following questions, A statement of Assertion (A)...
Radius of nucleus= R = R0A1/3.
So, Volume of nucleus, V =
Considering mass of proton = mass of neutron = m
The mass of the nucleus = M = mA
So, density = M/V =
So, the mean density is independent of mass number.
So, assertion and reason both are true and the reason properly explains the assertion.
View all questions of this test
Most Upvoted Answer
Directions : In the following questions, A statement of Assertion (A)...

Explanation:

Assertion (A): Density of all the nuclei is same.
- The assertion is correct because the density of nuclei is relatively constant for all types of nuclei. This is due to the fact that the volume of a nucleus is very small compared to the volume of an atom, making the density of nuclei similar.

Reason (R): Radius of nucleus is directly proportional to the cube root of mass number.
- The reason is also correct as the radius of a nucleus is determined by the number of nucleons (protons and neutrons) it contains. The radius is proportional to the cube root of the mass number, which is the sum of protons and neutrons in the nucleus. This relationship helps explain why the density of nuclei remains constant.

Therefore, both the assertion and reason are true, and the reason provides a correct explanation for the assertion.
Explore Courses for Class 12 exam
Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Density of all the nuclei is same.Reason (R): Radius of nucleus is directly proportional to the cube root of mass number.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer?
Question Description
Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Density of all the nuclei is same.Reason (R): Radius of nucleus is directly proportional to the cube root of mass number.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Density of all the nuclei is same.Reason (R): Radius of nucleus is directly proportional to the cube root of mass number.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Density of all the nuclei is same.Reason (R): Radius of nucleus is directly proportional to the cube root of mass number.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Density of all the nuclei is same.Reason (R): Radius of nucleus is directly proportional to the cube root of mass number.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Density of all the nuclei is same.Reason (R): Radius of nucleus is directly proportional to the cube root of mass number.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Density of all the nuclei is same.Reason (R): Radius of nucleus is directly proportional to the cube root of mass number.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Density of all the nuclei is same.Reason (R): Radius of nucleus is directly proportional to the cube root of mass number.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Density of all the nuclei is same.Reason (R): Radius of nucleus is directly proportional to the cube root of mass number.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.Assertion (A): Density of all the nuclei is same.Reason (R): Radius of nucleus is directly proportional to the cube root of mass number.a)Both A and R are true and R is the correct explanation of Ab)Both A and R are true but R is NOT the correct explanation of Ac)A is true but R is falsed)A is false and R is trueCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 12 tests.
Explore Courses for Class 12 exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev