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In Viewing Through a Magnifying Glass, One Usually Positions One’S Eyes Very Close to the Lens. Does Angular Magnification Change If the Eye is Moved Back? - CBSE (Science) Class 12 - Physics

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Question

Answer the following questions:

In viewing through a magnifying glass, one usually positions one’s eyes very close to the lens. Does angular magnification change if the eye is moved back?

Solution

Yes, the angular magnification changes. When the distance between the eye and a magnifying glass is increased, the angular magnification decreases a little. This is because the angle subtended at the eye is slightly less than the angle subtended at the lens. Image distance does not have any effect on angular magnification.

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APPEARS IN

 NCERT Solution for Physics Textbook for Class 12 (2018 to Current)
Chapter 9: Ray Optics and Optical Instruments
Q: 32.2 | Page no. 349
Solution In Viewing Through a Magnifying Glass, One Usually Positions One’S Eyes Very Close to the Lens. Does Angular Magnification Change If the Eye is Moved Back? Concept: Optical Instruments - The Eye.
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