What does the following statement mean
For convex lens principle focus is real, while for concave lens it is virtual

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Solution

For convex lens the parallel rays actually converge at focus but in case of concave they appear to diverge from a point on principal axis.

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Similar questions

Q. What is principal focus for concave lens?

Which of the following statements are true :

1) A convex lens always gives a real image.
2) A concave lens always gives virtual image.
3) A convex lens can also gives magnified virtual image.

Q. Concave lens always produces virtual image and convex lens always produces real image.

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.

(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.

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What does the following statement mean For convex lens principle focus is real, while for concave lens it is virtual

For convex lens the parallel rays actually converge at focus but in case of concave they appear to diverge from a point on principal axis.

What does the following statement mean
For convex lens principle focus is real, while for concave lens it is virtual