Chapter 13: Nuclei MCQs | physics Class 12 CBSE

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Question 1

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The atomic mass unit (u) is defined as:

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Question 2

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Isotopes of an element differ in their:

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Question 3

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Isobars are nuclei that have the same:

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Question 4

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The radius of a nucleus with mass number A is given by R = R₀A^(1/3). If R₀ = 1.2 fm, the radius of a nucleus with A = 27 is:

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Question 5

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Nuclear density is approximately:

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Question 6

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The energy equivalent of 1 u of mass is:

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Question 7

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The mass defect of a nucleus is defined as:

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Question 8

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The binding energy per nucleon is maximum for:

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Question 9

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In the mass number range A = 30 to 170, the binding energy per nucleon is approximately:

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Question 10

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The nuclear force between two nucleons:

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Question 11

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The potential energy between two nucleons is minimum at a separation of approximately:

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Question 12

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Radioactivity was discovered by:

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Question 13

Objective

In alpha decay of a nucleus, the mass number A and atomic number Z change as:

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Question 14

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In beta-minus (β⁻) decay, which of the following is emitted?

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Question 15

Objective

Gamma radiation consists of:

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Question 16

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The half-life T₁/₂ is related to the mean life τ by:

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Question 17

Objective

The energy released per fission of a uranium-235 nucleus is approximately:

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Question 18

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Nuclear fission of U-235 is initiated by:

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Question 19

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The source of energy in the sun is:

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Question 20

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The net energy released when four hydrogen nuclei fuse into one helium-4 nucleus in the sun's proton-proton cycle is approximately:

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Chapter sections

Chapter 13: Nuclei | MCQs

The atomic mass unit (u) is defined as:

Isotopes of an element differ in their:

Isobars are nuclei that have the same:

The radius of a nucleus with mass number A is given by R = R₀A^(1/3). If R₀ = 1.2 fm, the radius of a nucleus with A = 27 is:

Nuclear density is approximately:

The energy equivalent of 1 u of mass is:

The mass defect of a nucleus is defined as:

The binding energy per nucleon is maximum for:

In the mass number range A = 30 to 170, the binding energy per nucleon is approximately:

The nuclear force between two nucleons:

The potential energy between two nucleons is minimum at a separation of approximately:

Radioactivity was discovered by:

In alpha decay of a nucleus, the mass number A and atomic number Z change as:

In beta-minus (β⁻) decay, which of the following is emitted?

Gamma radiation consists of:

The half-life T₁/₂ is related to the mean life τ by:

The energy released per fission of a uranium-235 nucleus is approximately:

Nuclear fission of U-235 is initiated by:

The source of energy in the sun is:

The net energy released when four hydrogen nuclei fuse into one helium-4 nucleus in the sun's proton-proton cycle is approximately:

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