When a white light passes through a hollow prism, then
|
(a) There is no dispersion and no deviation |
(b) Dispersion but no deviation |
|
(c) Deviation but no dispersion |
(d) There is dispersion and deviation both |
(a) There is no dispersion and no deviation
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If the current is doubled, the deflection is also doubled in
|
(a) A tangent galvanometer |
(b) A moving coil galvanometer |
|
(c) Both (a) and (b) |
(d) None of these |
A stream of electrons is projected horizontally to the right. A straight conductor carrying a current is supported parallel to electron stream and above it. If the current in the conductor is from left to right then what will be the effect on electron stream
|
(a) The electron stream will be pulled upward |
|
(b) The electron stream will be pulled downward |
|
(c) The electron stream will be retarted |
|
(d) The electron beam will be speeded up towards the right |
The refractive indices of glass and water w.r.t. air are 3/2 and 4/3 respectively. The refractive index of glass w.r.t. water will be
|
(a) 8/9 |
(b) 9/8 |
(c) 7/6 |
(d) None of these |
The patient is asked to drink 
for examining the stomach by X-rays because X-rays are
|
(a) Reflected by heavy atoms |
(b) Refracted by heavy atoms |
|
(c) Less absorbed by heavy atoms |
(d) More absorbed by heavy atoms |
The length of a given cylindrical wire is increased by 100 %. Due to the consequent decrease in diameter the change in the resistance of the wire will be
|
(a) 300 % |
(b) 200 % |
(c) 100 % |
(d) 50 % |
In a thermocouple, the temperature that does not depend on the temperature of the cold junction is called
|
(a) Neutral temperature |
(b) Temperature of inversion |
|
(c) Both the above |
(d) None of the above |
The mechanism of the hydrogen bomb is based on
|
(a) Fission of isotopes of hydrogen |
(b) Fusion of protons |
|
(c) Fusion of deutrium and tritium |
(d) Fusion of neutrons |