Question
Why do pulsars appear to flicker when observed from
Earth?Solution
Pulsars are neutron stars that emit beams of radiation along their magnetic poles. These stars appear to flicker due to their rapid rotation, which periodically aligns their radiation beams with the Earth.
The surface tension of water on adding detergent to it –
When do spring tides occur?
A tuning fork of frequency 440 Hz resonates with a pipe closed at one end, vibrating in its second overtone . If the speed of sound in air is 330 m/s, w...
Cryogenics is a branch of Physics that deals with what?
Which instrument is used to measure electric current? Â
A particle starts from rest and accelerates uniformly at 2 m/s² for 5 seconds, then moves with constant speed for 5 seconds and finally decelerates uni...
In Young’s double-slit experiment, if the distance between slits is increased, fringe width:
Which law states that the total current entering a junction is equal to the total current leaving the junction?
Charges +q and –q are placed at (–d, 0) and (+d, 0). A third charge Q is placed at (0, x). For what value of x will the force on Q be maximum?
A horse cannot pull a cart on a frictionless surface because:
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