Question
When light wave suffers reflection at the interface from air to glass, the change in phase of the reflected wave is equal to
| (a) 0 |
(b) |
(c) |
(d) 2 |
When light wave suffers reflection at the interface from air to glass, the change in phase of the reflected wave is equal to
| (a) 0 |
(b) |
(c) |
(d) 2 |
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X-rays are produced by accelerating electrons by voltage V and let they strike a metal of atomic number Z. The highest frequency of X-rays produced is proportional to
|
(a) V |
(b) Z |
(c) (Z – 1) |
(d) |
A conducting circular loop of radius r carries a constant current i. It is placed in a uniform magnetic field
, such that
is perpendicular to the plane of the loop. The magnetic force acting on the loop is
|
(a) ir |
(b) 2πri |
(c) Zero |
(d) πri |
The Boolean equation of NOR gate is
|
(a) C = A + B |
(b) C = |
(c) C = A× B |
(d) C = |