Physics Questions

Consider a hypothetical planet whose mass and radius are both half that of Earth. If g is the acceleration due to gravity on the surface of Earth, the acceleration due to gravity on the planet will be

Mirages are formed primarily due to ___ of light.

An object of 1.2 cm height is placed 30 cm before a concave mirror of focal length of 20 cm toget a real image at a distance of 60 cm from the mirror. What is the height of the image formed?

Calculate the work done by the force of gravity when a satellite moves in an orbit of radius 40,000 km around the earth.

A ball, thrown vertically upward, rises to a height of 80 m and returns to its original position. The magnitude of its displacement after 7 s of motion will be ____. (take g = 10 m/s2)

The centre of the reflecting surface of a spherical mirror is a point called the ___.

The ____ of a substance is defined as the mass per unit volume.

What is the resistance (in Ω) of an electrical component if a current of 0.2 A passes through it on application of 8 V of potential difference across it?