Convex mirrors has virtual focus and concave has real focus.

True

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False

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Solution

The correct option is A True
The focus for a convex mirror, being virtual, lies behind the mirror. And the focus for a concave mirror, being real, lies in front of the mirror.

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Q. A concave mirror is said to have a real focus whereas a convex mirror is said to have a virtual foucs. apply the same logic to concave and convex lenses and say which of them has a real focus and which has a virtual focus.

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

(a) With the help of a labelled diagram explain how a convex lens converges a beam of parallel light rays. Mark the principal axis, optical centre, principal focus and focal length of the convex lens on the diagram.
(b) State whether the convex lens has a real focus or a virtual focus. (c) List some things that convex lens and concave mirror have in common.

(a) With the help of a labelled diagram, explain how a concave lens diverges a beam of parallel light rays. Mark the principal axis, optical centre, principal focus and focal length of the concave lens on the diagram. (b) State whether concave lens has a real focus or a virtual focus. (c) List some things that concave lens and convex mirror have in common.

The principal focus of a concave mirror is real while that of a convex mirror is.......................

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Convex mirrors has virtual focus and concave has real focus.

The correct option is A TrueThe focus for a convex mirror, being virtual, lies behind the mirror. And the focus for a concave mirror, being real, lies in front of the mirror.

The correct option is A True
The focus for a convex mirror, being virtual, lies behind the mirror. And the focus for a concave mirror, being real, lies in front of the mirror.