Physics Past Questions and Answers

An object of height 2.5cm is places 20cm from a convex mirror of focal length 10cm. Calculate the height of its image.

A ray of light passes from air to water to glass to air. Given that the refractive index for light passing from air to water is \(\frac{4}{3}\) and air to glass is \(\frac{3}{2}\), calculate the refractive index of glass relative to water

An object is placed at a point X between the focal point F and the optical centre C of a diverging lens. If F is the focal point on the other side of the lens, the image of the object is formed between

An object is placed 10cm from a converging lens of foal length 15cm. Calculate the magnification of the image formed

A telescope is said to be in normal adjustment when the