question_answer

  A biconvex lens has a radius of curvature of magnitude 20 cm. Which one of the following options describe best the image formed of an object of height 2 cm placed 30 cm from the lens?                                   [AIPMT (S) 2011]

A)  Virtual, upright, height \[=0.5\text{ }cm\]

B)  Real, inverted, height \[=4\text{ }cm\]

C)  Real, inverted, height \[=1\text{ }cm\]

D)  Virtual, upright, height \[=1\text{ }cm\]

Correct Answer: B

Solution :

In general we have assumed

So,

Here, image is real, inverted, magnified field and height of image is 4 cm.