- ATransferable.
- BAssociated with mass.
- CConserved.
- DAll of these.
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Assertion : Torque on the coil is the maximum, when coil is suspended in a radial magnetic field.
Reason : The torque tends to rotate the coil on its own axis.
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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. |
A metal conductor of length 1m rotates vertically about one of its ends at angular velocity 5 radians per second. If the horizontal component of earth's magnetic field is 0.2
, then the e.m.f. developed between the two ends of the conductor is
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(a) 5mV |
(b) 5 |
(c) 50 mV |
(d) 50 μV |
A coil of wire of a certain radius has 600 turns and a self inductance of 108 mH. The self inductance of a 2nd similar coil of 500 turns will be
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(a) 74 mH |
(b) 75 mH |
(c) 76 mH |
(d) 77 mH |
If two light waves having same frequency have intensity ratio 4 : 1 and they interfere, the ratio of maximum to minimum intensity in the pattern will be
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(a) 9 : 1 |
(b) 3 : 1 |
(c) 25 : 9 |
(d) 16 : 25 |
White light is passed through a prism whose angle is 5°. If the refractive indices for rays of red and blue colour are respectively 1.64 and 1.66, the angle of deviation between the two colours will be
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(a) 0.1 degree |
(b) 0.2 degree |
(c) 0.3 degree |
(d) 0.4 degree |