- AEqual wavelengths have equal linear momenta
- BEqual energies have equal linear momenta
- CEqual frequencies have equal linear momenta
- DEqual linear momenta have equal wavelengths
Explanation:
Equal linear momenta have equal wavelengths.
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Assertion : Fax is a modulating and demodulating device.
Reason : It is necessary for exact reproduction of a document.
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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 assertion is false but reason is true. |

Assertion : No interference pattern is detected when two coherent sources are infinitely close to each other.
Reason : The fringe width is inversely proportional to the distance between the two slits.
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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 effective resistance between points A and B is
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(a) 10 Ω |
(b) 20 Ω |
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(c) 40 Ω |
(d) None of the above three values |
A bulb rated at (100W – 200V) is used on a 100V line. The current in the bulb is
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(a) |
(b) 4 amp |
(c) |
(d) 2 amp |