Use the thin lens formula to deduce algebraically that a concave lens produces a virtual and diminished image independent of the location of the object.

A ___ lens always produce virtual and diminished image.

A lens forms a virtual, erect and diminished image whatever be the position of the object. Which type of lens this ?

Use the thin lens formula to show that an object placed within the focus of a convex lens produces a virtual and enlarged image.

Use the mirror equation to show that : (a) an object placed between f and 2f of a concave mirror produces a real image beyond 2f. (b) a convex mirror always produces a virtual image independent of the location of the object. (c) an object placed between the pole and focus of a concave mirror produces a virtual and enlarged image.

Use the mirror equation to deduct that : (a) an object between f and 2f of a concave mirror produces a real image beyond 2 f . (b) a convax mirror always produces a virtual image independent of the location of the object. ( c) the virtual image produced by a convex mirror is always diminished in size and is located between the focus and the pole. (d) an object placed between the pole and focus of a concave mirror produces a virtual and enlarged image.