A photon in motion has a mass
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(a) c/hv |
(b) h/v |
(c) hv |
(d) |
A photon in motion has a mass
|
(a) c/hv |
(b) h/v |
(c) hv |
(d) |
(d)
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Assertion : A metal piece and a non-metal (stone) piece are dropped from the same height near earth’s surface. Both will reach the earth’s surface simultaneously.
Reason : There is no effect of earth’s magnetic field on freely falling body.
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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. |
Polarised glass is used in sun glasses because
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(a) It reduces the light intensity to half an account of polarisation |
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(b) It is fashionable |
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(c) It has good colour |
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(d) It is cheaper |
The capacitor of capacitance 4 μF and 6 μF are connected in series. A potential difference of 500 volts is applied to the outer plates of the two capacitor system. The potential difference across the plates of capacitor of 4 μF capacitance is
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(a) 500 volts |
(b) 300 volts |
(c) 200 volts |
(d) 250 volts |