- A$I \propto \tan \theta$
- ✓$I \propto \theta$
- C$I=\frac{1}{\theta}$
- D$1 \propto \cot \theta$
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When the reflecting or refracting rays do not actually intersect but appear to intersect when produced backwards,
The acceleration of an electron in an electric field of magnitude 50 V/cm, if e/m value of the electron is 1.76 is
|
(a) 8.8 |
(b) 6.2 |
(c) 5.4 |
(d) Zero |
The efficiency of transformer is very high because
|
(a) There is no moving part in a transformer |
(b) It produces very high voltage |
|
(c) It produces very low voltage |
(d) None of the above |
If the two ends P and N of a P-N diode junction are joined by a wire
|
(a) There will not be a steady current in the circuit |
|
(b) There will be a steady current from N side to P side |
|
(c) There will be a steady current from P side to N side |
|
(d) There may not be a current depending upon the resistance of the connecting wire |
If the momentum of a photon is p, then its frequency is (Where m is the rest mass of the photon)
|
(a) |
(b) |
(c) |
(d) |