- ANewton
- BAmpere
- CMaxwell
- DFleming
Explanation:
The concept of displacement current was introduced by Maxwell.
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Which one of the series of hydrogen spectrum is in the visible region
|
(a) Lyman series |
(b) Balmer series |
(c) Paschen series |
(d) Bracket series |
Period of revolution increases in the order of
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(a) Saturn, Uranus, Venus |
(b) Mars, Saturn, Pluto |
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(c) Mercury, Neptune, Mars |
(d) Mars, Jupiter, Venus |
Cathode rays are similar to visible light rays in that
|
(a) They both can be deflected by electric and magnetic fields |
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(b) They both have a definite magnitude of wavelength |
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(b) They both have a definite magnitude of wavelength |
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(d) They both can expose a photographic plate |
The cause of the potential barrier in a P-N diode is
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(a) Depletion of positive charges near the junction |
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(b) Concentration of positive charges near the junction |
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(c) Depletion of negative charges near the junction |
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(d) Concentration of positive and negative charges near the junction |
The torque on a bar magnet due to the earth's magnetic field is maximum when the axis of the magnet is
|
(a) Perpendicular to the field of the earth |
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(b) Parallel to the vertical component of the earth's field |
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(c) At an angle of 33o with respect to the N-S direction |
|
(d) Along the North-South (N-S) direction |
The diameter of each plate of an air capacitor is 4 cm. To make the capacity of this plate capacitor equal to that of 20 cm diameter sphere, the distance between the plates will be
|
(a) 4 |
(b) 1 |
(c) 1 cm |
(d) 1 |
Assertion : The film which appears bright in reflected system will appear dark in the transmitted light and vice-versa.
Reason : The conditions for film to appear bright or dark in reflected light are just reverse to those in the transmitted light.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |