A. X-rays
B. α-rays
C. β-rays
D. γ-rays
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Related Mcqs:
- A cup of milk is placed in a microwave oven. Tell which statements is false. (1) Milk will be heated up only. (2) Cup will remain cool. (3) Both cup and mild will get hot ?
- A. None B. 1 C. 2 D. 3...
- Two sources of light are coherent if they emit rays of_______________?
- A. same wavelength B. same amplitude of vibration C. same wave length with constant phase difference D. same amplitude and wavelength...
- Hydrogen atom does not emit X-rays because _________________?
- A. its energy levels are too close to each other B. its energy levels are too far apart C. it is too small in size D. it has a single electron...
- Nuclear forces exist between ___________________?
- A. Proton-proton B. Proton-neutron C. Neutron-neutron D. All of the above...
- Mass defect per nucleon is ___________________?
- A. The binding energy of the nucleus B. Packing fraction C. The average energy of the nucleus D. All of above are one and the same thing...
- In vibrating cord the points where the amplitude is maximum, are called ___________________?
- A. antinodes B. nodes C. troughs D. crests...
- Which phenomena can be applied to estimate the velocity of star with respect to earth ___________________?
- A. Dopplers effect B. Interference of waves C. Beats phenomena D. All of these...
- Sound waves do not travel in vacuum because ___________________?
- A. they are transverse waves B. they are stationary waves C. they require material medium for propagation D. they do not have enough energy...
- In the following figure, the terminal potential is ___________________ ?
- A. zero B. 2V C. 12V D. 36V...
- Gives the definition of metre in terms of wavelength of red cadmium light ___________________?
- A. Newton B. Einstein C. Michelson D. Galileo...
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