A non-spherical shining spoon can generally be considered as a

The phenomenon of light bending around an obstacle is called:

A point object is placed at the centre of curvature of a spherical concave mirror. Which one among the following would be the correct location of image formed ?

The correct relation between the radius of curvature R and focal length f of a spherical mirror is

Where should an object be placed in front of a convex lens to get a real and enlarged image of the object ?

Spherical mirror formula relating an object distance 'u', image distance v' and focal length of mirror f may be applied to a plane mirror when