Physics Questions

An incident ray strikes a plane mirror at an angle of 20 deg with the mirror. The angle between the incident ray and reflected ray is ____.

The energy stored in a dry cell is in the form of

Which type of electromagnetic radiation has the shortest wavelength?

Find the potential energy gained by a body of mass 50 kg, if it is raised by 10m. (use g = 10 m/s2)

Echocardiogram is more closely related to

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)

Two particles with charges q1 and q2 are kept at a certain distance to exert force F on each other. If the distance is reduced to one-fifth, then the force between them is

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