- APhoton
- BPion
- CProton
- DK-meson
Explanation:
The proton, neutron, and electron possess half-integer spin states
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Assertion : In a simple battery circuit the point of lowest potential is positive terminal of the battery
Reason : The current flows towards the point of the higher potential as it flows in such a circuit from the negative to the positive terminal.
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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. |
If a ray of light goes from a rarer medium to a denser medium, will it bend towards the normal or away from it?
In a hydrogen atom, an electron moves in a circular orbit of radius 5.2 and produces a magnetic induction of 12.56 T at its nucleus. The current produced by the motion of the electron will be (Given
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(a) 6.53 |
(b) 13.25 |
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(c) 9.6 |
(d) 1.04 |
Assertion : Reduction factor (K) of a tangent galvanometer helps in reducing deflection to current.
Reason : Reduction factor increases with increase of current.
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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. |
Two wires have resistance of 2W and 4W connected to same voltage, ratio of heat dissipated at resistance is
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(a) 1 : 2 |
(b) 4 : 3 |
(c) 2 : 1 |
(d) 5 : 2 |
If an electron oscillates at a frequency of 1 GHz it gives
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(a) X-rays |
(b) Mirowaves |
(c) Infrared rays |
(d) None of these |