Physics Past Questions and Answers

Total eclipse of the sun occurs when the

What is the approximate critical angle for total internal reflection for diamond if the refractive index of diamond is 2.42?

A real object is placed at a distance ucm in front of a curved mirror of focal length fcm. If the image is upright and magnified, then the mirror is

Which of the following pairs of colours gives the widest separation in the spectrum of white light?

Two parallel plates at a distance of 8.0 x 10^-3m apart are maintained at a p.d of 600 volts with the negative plate earthed. What is the electric field strength?