Question

28. A lens of power 1 dioptre must
have a focal length of 1 cm. *
True
False​

Answer 1

Answer:

It is a false statement.

Reason-

1 dioptre is the power of a lens whose focal length is 1 m.(Both are in S.I units)

Answer 2

Answer:

False

Explanation:

Power= 1

-------

focal length (in m)

= 1

--------------- = 100D.

0.01