Electromagnetic waves are transverse in nature is evident by
|
(a) Polarization |
(b) Interference |
(c) Reflection |
(d) Diffraction |
Electromagnetic waves are transverse in nature is evident by
|
(a) Polarization |
(b) Interference |
(c) Reflection |
(d) Diffraction |
(a) Polarization
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If
is the original mass of the substance of half life period
years, then the amount of substance left after 15 years is
|
(a) |
(b) |
(c) |
(d) |
Beta rays emitted by a radioactive material are
|
(a) Electromagnetic radiation |
|
(b) The electrons orbiting around the nucleus |
|
(c) Charged particles emitted by nucleus |
|
(d) Neutral particles |
An arbitrary shaped closed coil is made of a wire of length L and a current I ampere is flowing in it. If the plane of the coil is perpendicular to magnetic field , the force on the coil is
|
(a) Zero |
(b) IBL |
(c) 2IBL |
(d) |
If scattering particles are 56 for 90° angle then this will be at 60° angle
|
(a) 224 |
(b) 256 |
(c) 98 |
(d) 108 |