Physics Past Questions and Answers

The speed of light in air is 3 x 10⁸ms^-1. What is the speed in glass with a refractive index of 1.50?

If the refractive index of a medium in air is 2.0, what is the critical angle for this medium?

Which of the following arrangements of the components of electromagnetic spectrum is in ascending order of wavelengths?

The angle between the direction of the earth's magnetic field and the horizontal is called the

Calculate the force acting on an electron of charge 1.6 x 10^-19C placed in an electric field of intensity 10⁸Vm^-1