- Acontinuous when electric field is changing in the circuit
- Bcontinuous when magnetic field is changing in the circuit
- Ccontinuous in both types of fields
- Dcontinuous through wires and resistance only
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The diffraction effect can be observed in
|
(a) Only sound waves |
(b) Only light waves |
|
(c) Only ultrasonic waves |
(d) Sound as well as light waves |
A uniform wire of 16 Ω is made into the form of a square. Two opposite corners of the square are connected by a wire of resistance 16 Ω. The effective resistance between the other two opposite corners is
|
(a) 32 Ω |
(b) 20 Ω |
(c) 8 Ω |
(d) 4 Ω |
When an inert gas is filled in the place vacuum in a photo cell, then
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(a) Photo-electric current is decreased |
|
(b) Photo-electric current is increased |
|
(c) Photo-electric current remains the same |
|
(d) Decrease or increase in photo-electric current does not depend upon the gas filled |