Question

What is the formula for magnification obtained with a lens? a) Ratio of height of image to height of object b) Double the focal length. c) Inverse of the radius of curvature. d) Inverse of the object distance.

Answer 1

Answer:

Option (a) is 101% correct

Explanation:

Ratio of height of image to height of object

Hence, Formula for Magnification is M=V/U

The Statement (option a) States this formula very well

Answer 2

Ratio of height of image to height of object.

• Magnification is a quantity that defines the size of the image with respect to the size of the object.

• It also relates the image distance from the lens or mirror and the object distance.

• For small objects ,the general expression of magnification is :

$\boxed{\rm \: magnification = \dfrac{ h_{i} }{ h_{o}} = \dfrac{v}{u} }$

• Please note that : Magnification doesn't have any unit because it is a ratio of similar quantities.

Hope It Helps.