Punjab 12th Class Physics Chapter 10 Nuclear Physics Mcqs Test Online

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Question 1 of 10

Physics

1. Unit of decay constant λ is,

1.s¹

2.m¹

3.m

4.ms

Question 1 of 10

Question 2 of 10

2. Gammas radiations are emitted due to:

1.De-excitation of nucleus

2.Excitation of nucleus

3.De-excitation's of atom

4.Excitation of atom

Question 2 of 10

Question 3 of 10

3. The radioactive nuclide ₈₆Ra²²⁸ decays by a series of emissions of three alpha particles and one beta particle. The nuclide X finally formed is,

1.₈₆X²²²

2.₈₃X²¹⁶

3.₈₄X²²⁰

4.₈₈X²¹⁵

Question 3 of 10

Question 4 of 10

4. How many neutrons are there in the nuclide Zn⁶⁶?

1.22

2.36

3.66

4.30

Question 4 of 10

Question 5 of 10

5. The binding energy for nucleus A is 7.7 MeV and that for nucleus B is 7.8 MeV. Which nucleus has the larger mass?

1.Less than Nucleus A

2.Nucleus B

3.None of these

4.Nucleus A

Question 5 of 10

Question 6 of 10

6. Bottom quark carries charge:

1.2/3 e

2.-1/3 e

3.-2/3 e

4.+1/3 e

Question 6 of 10

Question 7 of 10

7. Which of the following basic force is able to provide an attraction between two neutrons:

1.Gravitational and strong nuclear

2.Only nuclear force

3.Electrostatic and nuclear

4.Electrostatics and gravitational

Question 7 of 10

Question 8 of 10

8. The energy equivalent of 1 kg of matter is about.

1.10⁻¹² J

2.10¹⁷ J

3.1 J

4.10⁻¹⁵ J

Question 8 of 10

Question 9 of 10

9. Mass equivalent of 931 MeV energy is:

1.2.67 x 10⁻²⁷ kg

2.6.02 x 10 – 27kg

3.1.766 x 10⁻²⁷ kg

4.6.02 x 10⁻²³ kg

Question 9 of 10

Question 10 of 10

10. A radioactive substance has a half life of four months. 3-fourth of the substance will decay in.

1.12 months

2.8 months

3.6 months

4.16 months

Question 10 of 10

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