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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