Physics Questions

A force of 20 N displaces an object through 2 m and does a work of 20 J. The angle between the force and displacement is

If I is the current through a wire and e is the charge of an electron, then the number of electrons crossing in t seconds will be given by

Which of the following devices converts Chemical energy into Electrical energy?

Name the type of mirror used in the headlight of vehicles

Which of the following physical quantity measures the rate of work done?

Which type of electromagnetic radiation has the longest wavelength?

What is the value of acceleration due to gravity on the surface of the earth?

A curved mirror where the reflecting surface is curved inwards is called a