Question

Which of the following lenses would you
prefer to use while reading smalllet ters

found in a dictionary?(a)A convex lens

of focal length 50cm.(b)A concave

lens of focal length50cm.(c)Aconvex

lens of focal length 5cm.(d)Aconcave

lens of focal length 5cm.​

Answer 1

Answer:

(c) A convex lens of focal length 5

REASON : 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.

HOPE IT HELPS...

Answer 2

the answer is C

Because a convex lens gives a magnified image and if the object is placed between the radius of curvature and focal length .