Physics Questions and Answers

If the distance between the object and the pinhole of a pinhole camera is reduced by half the size of the image of the object

I.Chemical II.Sound III.Electricity

Which of the above forms of energy can directly be converted to light energy?

A satellite moves in a circular orbit of radius 4R round the earth. The acceleration of the satellite in terms of g is

What happens to a water pool on a day when the humidity of the air is very low?

A charged particle is moving in a uniform magnetic field. if the direction of motion of the charged particle is parallel to the magnetic field, the path of the charge will