In Young's double slit experiment, if the two slits are illuminated with separate sources, no interference pattern is observed because
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(a) There will be no constant phase difference between the two waves |
|
(b) The wavelengths are not equal |
|
(c) The amplitudes are not equal |
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(d) None of the above |
(a) There will be no constant phase difference between the two waves
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A parallel plate capacitor carries a charge q. The distance between the plates is doubled by application of a force. The work done by the force is
|
(a) Zero |
(b) |
(c) |
(d) |
Binding energy of a nucleus is
|
(a) Energy given to its nucleus during its formation |
|
(b) Total mass of nucleus converted to energy units |
|
(c) Loss of energy from the nucleus during its formation |
|
(d) Total K.E. and P.E. of the nucleons in the nucleus |
If a magnet is hanged with its magnetic axis then it stops in
|
(a) Magnetic meridian |
(b) Geometric meridian |
|
(c) Angle of dip |
(d) None of these |
A magnet of magnetic moment M and pole strength m is divided in two equal parts, then magnetic moment of each part will be
|
(a) M |
(b) M/2 |
(c) M/4 |
(d) 2M |
The magnitude of saturation photoelectric current depends upon
|
(a) Frequency |
(b) Intensity |
(c) Work function |
(d) Stopping potential |
Wires P and Q have the same resistance at ordinary (room) temperature. When heated, resistance of P increases and that of Q decreases. We conclude that
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(a) P and Q are conductors of different materials |
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(b) P is N-type semiconductor and Q is P-type semiconductor |
|
(c) P is semiconductor and Q is conductor |
|
(d) P is conductor and Q is semiconductor |
