- AIncrease.
- BDecreases.
- CIncrease or decrease.
- DNone of these.
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If the following input signal is sent through a PN-junction diode, then the output signal across RL will be
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(a)
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(b)
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(c)
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(d)
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An electron and proton have the same de-Broglie wavelength. Then the kinetic energy of the electron is
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(a) Zero |
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(b) Infinity |
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(c) Equal to the kinetic energy of the proton |
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(d) Greater than the kinetic energy of the proton |
The figure shows three circuits with identical batteries, inductors, and resistors. Rank the circuits according to the current through the battery (i) just after the switch is closed and (ii) a long time later, greatest first

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(a) (i) |
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(b) (i) |
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(c) (i) |
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(d) (i) |
To convert a galvanometer into a voltmeter, one should connect a
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(a) High resistance in series with galvanometer |
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(b) Low resistance in series with galvanometer |
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(c) High resistance in parallel with galvanometer |
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(d) Low resistance in parallel with galvanometer |
A parallel beam of monochromatic light of wavelength 5000 Å is incident normally on a single narrow slit of width 0.001 mm. The light is focused by a convex lens on a screen placed on the focal plane. The first minimum will be formed for the angle of diffraction equal to
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(a) 0o |
(b) 15o |
(c) 30o |
(d) 60o |