Free Printable Nuclear physics

1.

Name the above reaction-

a)

Nuclear fission

b)

Nuclear fusion

c)

Nuclear reaction

d)

Radioactivity

2.

Which particle is liberated in this process?

a)

$\alpha$

b)

$\beta^-$

c)

$\gamma$

d)

$\beta^+$

3.

If the unstable nucleus has excess neutrons than a neutron converts itself into a proton. This process is called -

a)

$\alpha$ decay

b)

$\beta^-$ decay

c)

$\gamma$ decay

d)

$\beta^+$ decay

4.

In a $\gamma$ decay process the mass number and atomic number of the nucleus remain unchanged.

a)

True

b)

False

5.

1 Ci =

a)

3.74\ \times\ 10^{10}

rd

b)

$3.74\ \times10^4$ rd

c)

$10^6$ Bq

d)

1 decay per second

6.

$T_{\frac{1}{2}}=$

a)

$1.44\ \tau$

b)

$0.693\ \tau$

c)

$\frac{1}{\lambda}$

d)

$\log_e\ 2\ \times\lambda$

7.

The atomic number of a given nuclide is equal to

a)

Number of protons in nucleus

b)

Number of neutrons in nucleus

c)

Sum of number of protons and neutrons in nucleus

8.

What is radioactivity?

a)

The phenomena of spontaneous disintegration of an atomic nucleus resulting in a release of only matter.

b)

The phenomena of spontaneous disintegration of an atomic nucleus resulting in a release of only energy.

c)

The phenomena of spontaneous disintegration of an atomic nucleus resulting in a release of energy and matter.

9.

If there are 92 protons in $U^{238}$ . Find the number of neutrons?

a)

145

b)

146

c)

147

d)

144

10.

Isotopes of the same elements have different

a)

Number of neutrons in nucleus

b)

Number of protons in nucleus

Nuclear physics

Total questions: 10

Worksheet time: 5mins

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