Question

Which of the following lens would you prefer to use while reading small letters found in dictionary?

a) A convex lens of focal length 5cm
b) A concave lens of focal length 5cm
c) A convex lens of focal length 10cm
d) A concave lens of focal length 10cm​

Answer 1

Answer:

c option should be the answer

Answer 2

$\mathfrak{\huge{\pink{\underline{\underline{Answer:-}}}}}$

A convex lens gives a magnified image of an object when it is placed between the radius of curvature and focal length. Also, magnification is more for convex lenses having shorter focal length. Therefore, for reading small letters, a convex lens of focal length 5 cm should be used.