- Run slow.
- Run fast.
- Stop working.
- Give correct time.
Explanation:
Because the time period of a spring-mass system does not depend on the acceleration due to gravity.
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A charge produces an electric field of 1 N/C at a point distant 0.1 m from it. The magnitude of charge is
|
(a) 1.11 |
(b) 9.11 |
(c) 7.11 |
(d) None of these |
Through two parallel wires A and B, 10 and 2 ampere of currents are passed respectively in opposite direction. If the wire A is infinitely long and the length of the wire B is 2 m, the force on the conductor B, which is situated at 10 cm distance from A will be
|
(a) 8 |
(a) 8 |
(c) 4 |
(d) 4π |
Equivalent resistance between the points A and B is (in W)
|
(a) |
(b) 1 |
(c) 2 |
(d) 3 |
A wire of length 1 m is moving at a speed of 2ms–1 perpendicular to its length and a homogeneous magnetic field of 0.5 T. The ends of the wire are joined to a circuit of resistance 6 W. The rate at which work is being done to keep the wire moving at constant speed is
|
(a) |
(b) |
(c) |
(d) 1W |
A moving coil galvanometer of resistance 100 is used as an ammeter using a resistance 0.1 The maximum deflection current in the galvanometer is 100A. Find the minimum current in the circuit so that the ammeter shows maximum deflection
|
(a) 100.1 mA |
(b) 1000.1 mA |
(c) 10.01 mA |
(d) 1.01 mA |
For photoelectric emission, tungsten requires light of 2300 Å. If light of 1800 Å wavelength is incident then emission
|
(a) Takes place |
(b) Don’t take place |
|
(c) May or may not take place |
(d) Depends on frequency |