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Q.1: Alpha particles possess greater penetration power than that of beta particles due to its——-?
- Smaller ionization power
- Greater ionization power
- Neither greater nor smaller ionization power
- Same ionization power
Q.2: Pair production cannot take place in a vacuum as ——–?
- Mass is not conserved
- Energy is not conserved
- Momentum is not conserved
- The chargee is not conserved
Q.3: Pair production can take place only with———?
- Gamma rays
Q.4: A device for producing high-velocity nuclei is ——–?
- Cloud chamber
- Linear accelerator
- A mass spectrograph
- Wilson cloud chamber
Q.5: Which of the following will be a better shield against gamma rays ?
- Ordinary water
- Heavy water
Q.6: The maximum safe limit dose for persons working in a nuclear power station is ——–?
- 1 rem per week
- 5 rem per week
- 4 rem per week
- 3 rem per week
Q.7: Radiations are used for the treatment of skin of a patient is——–?
- Alpha rays
- Gamma rays
- Beta rays
Q.8: Which branch of science plays an important role in the development of technology and engineering ?
Q.9: Which one is not a branch of physical sciences ?
Q.10 The number of categories in which physical quantities are divided is——-?