An object is placed 20-cm from a concave mirror. An image 4x the size of the object is formed on the screen. What is the focal length of the mirror?O 32 cmO 24 cmO 20 cmO 16 cm

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Answered: What is the focal length of the mirror?

Science

Physics

What is the focal length of the mirror?

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter17: Reflections And Mirrors

Section: Chapter Questions

Problem 6STP

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Concept explainers

Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.

Question

An object is placed 20-cm from a concave mirror. An image 4x the size of the object is formed on the screen. What is the focal length of the mirror?
O 32 cm
O 24 cm
O 20 cm
O 16 cm

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