The charge on beta particle is________________?
The charge on beta particle is________________? A. 1 B. -1 C. +2 D. -2
The charge on beta particle is________________? A. 1 B. -1 C. +2 D. -2
X-rays are electromagnetic waves like________________? A. Light waves B. Heat waves C. MicrowavesD. γ-rays
The most useful tracer is_________________? A. Sr-90 B. I-131 C. CA-41D. C-14
Which one of the following possesses greater penetration power ? A. α-rays B. β-rays C. γ-raysD. Neutron-rays
Average distance covered by alpha particles in the air before its ionizing power ceases is called its_________________? A. TrajectoryB. Range C. Firing level D. Limit
CFC is used in _________________? A. Refrigeration B. Aerosol spray C. Plastic foam industryD. All of above
Pair production cannot take place in a vacuum as ________ is not conserved ? A. Energy B. Charge C. Mass D. MomentumB.
An alpha particle can produce fluorescence in__________________? A. ZnS B. Barium platinocyanide C. Calcium tungstateD. All of above
Geiger counter is suitable for _________________? A. Fast counting B. Extremely fast countingC. Slow counting D. All situations
The penetration power of alpha particle as compared to beta particle is_______________? A. 10 times moreB. 100 times more C. 100 times less D. 10 times less