- Aelectromagnetism
- Bmagnetoelectricism
- Celectricmagnetism
- Dmagneticelectromerism
Explanation:
Study of phenomenon involving both electricity and magnetism is called electromagnetism.
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Assertion : A person touching a high power line gets stuck with the line.
Reason : The current carrying wires attract the man towards it.
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(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. |
The time period of rotation of the sun is 25 days and its radius is 7 . The Doppler shift for the light of wavelength 6000 Å emitted from the surface of the sun will be
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(a) 0.04 Å |
(b) 0.40 Å |
(c) 4.00 Å |
(d) 40.0 Å |
Which statement is correct for a zone plate and a lens
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(a) Zone plate has multi focii whereas lens has one |
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(b) Zone plate has one focus whereas lens has multiple focii |
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(c) Both are correct |
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(d) Zone plate has one focus whereas a lens has infinite |
and
ions are projected on the photographic plate with same velocity in a mass spectrograph. Which one will strike farthest
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(a) |
(b) |
(c) |
(d) |
A real image is formed by:
In order to pass 10% of main current through a moving coil galvanometer of 99 ohm, the resistance of the required shunt is
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(a) 9.9 Ω |
(b) 10 Ω |
(c) 11 Ω |
(d) 9 Ω |
In the adjoining circuit diagram each resistance is of 10 W. The current in the arm AD will be
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(a) |
(b) |
(c) |
(d) |
In Young's double slit experiment, if the widths of the slits are in the ratio 4 : 9, the ratio of the intensity at maxima to the intensity at minima will be
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(a) 169 : 25 |
(b) 81 : 16 |
(c) 25 : 1 |
(d) 9 : 4 |