ICSE Class 10 Physics Refraction through Lens

Q.

If the power of a convex lens is +2 D, then the focal length is



Q.

A lens which is thin at the edges is 



Q.

The line passing through the optical centre and perpendicular to both faces of the lens is called the



Q.

When a ray of light passes through the prism, it



Refraction and Spherical Lenses - Part 1

Define convex and concave lenses, optical centre, principle axis, centre of curvature, principal focus and focal length of a spherical lens.