Questions

A capacitor of 10 µF charged upto 250 volt is connected in parallel with another

A capacitor of 10 µF charged upto 250 volt is connected in parallel with another capacitor of 5 µF charged…

The 6563 Å line emitted by hydrogen atom in a star is found to be red shifted by 5Å

The 6563 Å line emitted by hydrogen atom in a star is found to be red shifted by 5 Å.…

A beaker of radius 1.5 cm is filled with a liquid of surface tension 0.075 N/m

A beaker of radius 1.5 cm is filled with a liquid of surface tension 0.075 N/m. Force across an imaginary…

A force of 5 N is acting on an object. Displacement of object is 10 m and the work done

A force of 5 N is acting on an object. Displacement of object is 10 m and the work done…

A body is moving in a vertical circle. The string must remain taut at the highest point

A body is moving in a vertical circle. The string must remain taut at the highest point. The centripetal acceleration…

A transistor is working in common emitter mode. Its amplification factor is 80

A transistor is working in common emitter mode. Its amplification factor is 80. If the base current is 250 µA,…

Water rises to a height h in a capillary at the surface of earth. On the surface

Water rises to a height h in a capillary at the surface of earth. On the surface of the moon…

A Galilean telescope has an objective of focal length 100 cm and magnifying power 50

A Galilean telescope has an objective of focal length 100 cm and magnifying power 50. The distance between the two…

Starting from the origin, a body oscillates simple harmonically with a period of 2s

Starting from the origin, a body oscillates simple harmonically with a period of 2s. After what time will its kinetic…

The potential difference applied to an X-ray tube is 5 kV and the current through it

The potential difference applied to an X-ray tube is 5 kV and the current through it is 3.2 mA. The…