Physics Questions

Two identical resistors, each of 10 ohm, are connected in parallel. This combination, in turn, is connected to a third resistor of 10 ohm. The equivalent resistance of the combination is ___.

A 5 kg object is raised through a height of 4 m. The work done by the force of gravity acting on the object is (take g = 10 m/s2)

For what is Mohs scale used?

Which among the following is not an environment friendly mode of producing electricity?

What is the resistance (in Ω) of an electrical component if a current of 0.4 A passes through it on application of 12 V of potential difference across it?

The work done in one complete revolution of the moon around the earth is equal to

Which object converts electricity to light?

A lens has a power +2.0 D. The type of lens and its focal length will be