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Chapter 35: Q. 6 (page 1017)

A 2.0mtall man is 10min front of a camera with a 15mmfocal length lens. How tall is his image on the detector?

Short Answer

Expert verified

The height of the image will be0.0015m.

Step by step solution

01

Given information

We have given,

Height of the man = 2m

Distance from the camera = 10m

focal length of the camera = 15mm=0.015m

We have to find the height of the image.

02

Simplify

Since the camera uses a converging lens.

then using the lens's equation

1f=1v-1u10.015=1v-1-101v=10.015-110=9.9850.15v=0.015m

Since the image formed by the lens is inverted.

m=HeightoftheimageHeightoftheobject=h'hh'2=vu=0.01510h'=-0.0015m

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