In comparing the camera and the human eye, the film of the camera function as the?

An object 4 cm high is placed 15 cm from a concave mirror of focal length 5 cm. The size of the image is?

An object is embedded in a block of ice, 10 cm below the plane surface. if the refractive index of the ice is 1.50, the apparent depth below the surface is?

Which of the following is used for the correction of short sightedness?

Dispersion occurs when white light passes through a glass prism because of the?