e0.0POSTTESTMultiple Choice: Encircle the letter that corresponds to the correct answer.1. A man stands 10 m in front of a large plane mirror. How far must he walkbefore he is 5m away from his image?A. 10 cmB. 7.5 mC. 5 mD. 2.5 m2. What is the focal length of the mirror if an object 3 cm high is placed at adistance of 8 cm from a concave mirror which produces a virtual image 4.5 cmhigh?A. 21 cmB. 22 cmD. 23 cmD. 24 cm3. Which of the following distances should a person hold his face from a concavemirror with a focal length of 25 cm so that it may act as a shaving mirror?A. 45 cmB. 20 cmC. 25 cmD. 30 cm4. What is the distance of the image if an object is placed at a large distance infront of a concave mirror of a radius of curvature of 40 cm?C. 40 cmB. 30 cmD. 50 cmA. 20 cm5. What is the distance and the radius of curvature of a convex mirror used as arear-view mirror in a moving car is 2.0 m? A truck is coming from behind it at adistance of 3.5 m.A. 0.77 m behind the mirrorB. 0.77 m in front of the mirrorC. 7.7 m behind the mirrorD. 7.7 m in front of the mirrorOF P

Note:- You have posted multiple different questions. as per guideline I will solve first question…

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1. A man stands 10 m in front of a large plane mirror. How far must he walk before he is 5m away from his image? A. 10 cm B. 7.5 m C. 5 m D. 2.5 m

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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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

e
0.0
POSTTEST
Multiple Choice: Encircle the letter that corresponds to the correct answer.
1. A man stands 10 m in front of a large plane mirror. How far must he walk
before he is 5m away from his image?
A. 10 cm
B. 7.5 m
C. 5 m
D. 2.5 m
2. What is the focal length of the mirror if an object 3 cm high is placed at a
distance of 8 cm from a concave mirror which produces a virtual image 4.5 cm
high?
A. 21 cm
B. 22 cm
D. 23 cm
D. 24 cm
3. Which of the following distances should a person hold his face from a concave
mirror with a focal length of 25 cm so that it may act as a shaving mirror?
A. 45 cm
B. 20 cm
C. 25 cm
D. 30 cm
4. What is the distance of the image if an object is placed at a large distance in
front of a concave mirror of a radius of curvature of 40 cm?
C. 40 cm
B. 30 cm
D. 50 cm
A. 20 cm
5. What is the distance and the radius of curvature of a convex mirror used as a
rear-view mirror in a moving car is 2.0 m? A truck is coming from behind it at a
distance of 3.5 m.
A. 0.77 m behind the mirror
B. 0.77 m in front of the mirror
C. 7.7 m behind the mirror
D. 7.7 m in front of the mirror
OF P

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