- AReflection
- BDiffraction
- CInterference
- DPolarisation
Explanation:
Only transverse waves can be polarised.
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An electron of mass m and charge e is accelerated from rest through a potential difference V in vacuum. The final speed of the electron will be
|
(a) |
(b) |
(c) |
(d) 2eV/m |
Which logic gate is represented by the following combination of logic gates
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(a) OR |
(b) NAND |
(c) AND |
(d) NOR |

The instrument that is based on the principle that when an object is placed between first principal focus and the optic centre of convex lens, an upright, virtual and enlarged image on the same side of the object is formed, is:
Threshold wavelength for photoelectric effect on sodium is 5000 Å. Its work function is
|
(a) 15 J |
(b) 16 |
(c) 4 |
(d) 4 |
Assertion : A pulsor is a source of radio waves which change in terms of intensity at regular interval of time
Reason : A pulsor is a rotating neutron star
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |