Name the spherical mirror which has : (a) virtual principal focus. (b) real principal focus.

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Solution

a) A convex mirror has a virtual principal focus.

b) A concave mirror has a real principal focus.

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Similar questions

Q. Name the spherical mirror which has :
Virtual principal focus.
Real principal focus.

The principal focus of a convex mirror is virtual.

Define focus and principal focus of a lens. Derive mirror formula for a concave mirror when image formed is (i) real (ii) virtual. Also give the sign convention used. [5 MARKS]

Q. Why is a convex mirror is said to have a virtual principal focus?

A spherical concave mirror focuses all rays parallel to its principal axis exactly onto the focus.

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Name the spherical mirror which has : (a) virtual principal focus. (b) real principal focus.

a) A convex mirror has a virtual principal focus. b) A concave mirror has a real principal focus.

a) A convex mirror has a virtual principal focus.

b) A concave mirror has a real principal focus.