An oscillator is nothing but an amplifier with
|
(a) Positive feed back |
(b) Large gain |
|
(c) No feedback |
(d) Negative feedback |
An oscillator is nothing but an amplifier with
|
(a) Positive feed back |
(b) Large gain |
|
(c) No feedback |
(d) Negative feedback |
(a) Positive feed back
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The similarity between the sound waves and light waves is
|
(a) Both are electromagnetic waves |
|
(b) Both are longitudinal waves |
|
(c) Both have the same speed in a medium |
|
(d) They can produce interference |

A one metre long wire is lying at right angles to the magnetic field. A force of 1 kg wt. is acting on it in a magnetic field of 0.98 Tesla. The current flowing in it will be
|
(a) 100 A |
(b) 10 A |
(c) 1 A |
(d) Zero |
The energy required to knock out the electron in the third orbit of a hydrogen atom is equal to
|
(a) 13.6 eV |
(b) + |
(c) - |
(d) - |