- AHuygens principle
- BClassic wave theory
- Cde – Broglie hypothesis
- DEinstein’s particle theory
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Which of the planet is brightest
|
(a) Mercury |
(b) Venus |
(c) Mars |
(d) Jupiter |
$\frac{\text{E}}{2}$
$2\text{E}$
$\text{E}$
$\frac{\text{E}}{4}$
(USS 133) Indium impurity in germanium makes
|
(a) N-type |
(b) P-type |
(c) Insulator |
(d) Intrinsic |
At a certain place the horizontal component of the earth’s magnetic field is B0 and the angle of dip is 45o. The total intensity of the field at that place will be
|
(a) B0 |
(b) |
(c) 2B0 |
(d) |
Assertion : In a movie, ordinarily 24 frames are projected per second from one end to the other of the complete film.
Reason : The image formed on retina of eye is sustained upto 1/10 second after the removal of stimulus.
|
(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. |
|
(d) If the assertion and reason both are false. |
At a certain place a magnet makes 30 oscillations per minute. At another place where the magnetic field is double, its time period will be
| (a) 4 sec | (b) 2 sec |
(c) |
(d) |