 ## An inductor of self inductance 100 mH and a resistor of resistance 50 are connected to a 2 V ba….

An inductor of self inductance 100 mH and a resistor of resistance 50 are connected to a 2 V battery. The time required for the current to fall to half of its steady value is

## The energy gap between a valence band and a conduction band of a semiconductor is….

The energy gap between a valence band and a conduction band of a semiconductor is

## How is the interference pattern in Young's double-slit experiment affected if the sodium (yello….

How is the interference pattern in Young's double-slit experiment affected if the sodium (yellow) light is replaced by a red light of the same intensity?

## A person with defective eyesight is unable to see objects clearly nearer than 1.5 m. He wants to rea….

A person with defective eyesight is unable to see objects clearly nearer than 1.5 m. He wants to read a book placed at a distance of 30 cm from his eyes. Find the power of the lens he requires for his spectacles.

## Lorentz force is given by the following formula : ….

Lorentz force is given by the following formula :

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## A voltmeter reads 3 V at full-scale deflection and is graded as 6000 /V. What resistance should be c….

A voltmeter reads 3 V at full-scale deflection and is graded as 6000 /V. What resistance should be connected in series with it so that it reads 12 V at full-scale deflection?

## An infinite line charge produces a field of 7.182 x 108 N/C at a distance of 2 cm. The linear charge….

An infinite line charge produces a field of 7.182 x 108 N/C at a distance of 2 cm. The linear charge density of the line charge is

## Under a constant pressure head, the rate of streamlined volume flow of a liquid through a capillary ….

Under a constant pressure head, the rate of streamlined volume flow of a liquid through a capillary tube is Q. If the length of the capillary tube is doubled and the diameter of the bore is halved, then the rate of flow would become

## There are two displacement vectors of magnitudes 3 m and 4 m. At which angle should the two vectors ….

There are two displacement vectors of magnitudes 3 m and 4 m. At which angle should the two vectors be added, so that the magnitude of the resultant vector would be 7 m?

## A person measures the time period of a simple pendulum inside a stationary lift and finds it to be T….

A person measures the time period of a simple pendulum inside a stationary lift and finds it to be T. If the lift starts accelerating upwards with an acceleration of g/3, then the time period of the pendulum will be

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