Question

A 5.00-cm tall light bulb is placed a distance of 52.8 cm from a double convex lens having a focal length of 18.4 cm. Determine the image distance.

Answer 1

Answer:

Image distance is 28.24 cm

Image height is 2.67 cm

Explanation:

ho = 5 cm

do = 52.8 cm

f = 18.4 cm

$\frac{1}{f}$ = $\frac{1}{do}$+$\frac{1}{di}$

on solving,

Image distance, di = 28.24 cm

M=$\frac{hi}{ho}$=$\frac{-di}{do}$

On solving & neglecting "-" sign,

Image height, ho = 2.67 cm