β-particles can be stopped by:

1. 1 cm thick aluminium foil
2. a sheet of paper
3. a few centimeters of air
4. all of these
Show Answer
Answer: A
Explanation:
• β-particles can be stopped by 1 cm thick aluminium foil and 1 m of air.
0 0 Complains

The rays which do not consist of matter particles are:

1. α-rays
2. β-rays
3. γ-rays
4. none of these
Show Answer
Answer: C
Explanation:
• As γ-rays are a form of electromagnetic radiation.
0 0 Complains

The rays consist of high energy photons and are released by the nucleus during disintegration:

1. α-rays
2. β-rays
3. γ-rays
4. all of these
Show Answer
Answer: C
Explanation:
• Gamma radiations consist of photons
1 0 Complains

Gamma radiations have:

1. very low mass
2. no charge
3. low energy
4. no mass and charge
Show Answer
Answer: D
Explanation:
• N/A
0 0 Complains

Velocity of γ-rays is:

1. 10 times greater than alpha particles
2. same as that of light
3. 10 times greater than that of light
4. 1/10th than that of light
Show Answer
Answer: B
Explanation:
• N/A
0 0 Complains

The ionizing power of γ-rays is:

1. 10 times greater than alpha particles
2. less as compared to both α and β-particles
3. 1/10th of that of β-particles
4. 10 times greater than that of β-particles;
Show Answer
Answer: B
Explanation:
• Gamma photons can displace electron from gas molecule, but the chances of photon-electron collisions are small.
0 0 Complains

Which one of the followng rays is most penetrating?

1. α-rays
2. β-rays
3. γ-rays
4. none of these
Show Answer
Answer: C
Explanation:
• Because of their high velocity and non-material nature.
1 0 Complains

γ-rays can be stopped by:

1. 5cm thick sheet of lead
2. several cm thick layer of concrete
3. both a & b
4. thick sheet of paper
Show Answer
Answer: C
Explanation:
• N/A
0 0 Complains

α-rays consist of:

1. one neutron and one proton
2. two protons only
3. two electrons and two protons
4. two protons and two neutrons
Show Answer
Answer: D
Explanation:
• N/A
0 0 Complains

In ionization chamber method used for the measurement of radioactivity , the ionization chamber is called?

1. Dosimeter
2. electrometer
3. potentiometer
4. none of these
Show Answer
Answer: A
Explanation:
• N/A
1 0 Complains