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A small candle, 2.5 cm in size is placed at 27 cm in front of
Physics Part-II
Physics Part-II

Class 12

NCERT

Publisher:
NCERT
Subject:
Physics
1

Chapter 1: Ray Optics and Optical Instruments

41 questions

Q1
A small candle, in size is placed at in front of a concave mirror of radius of curvature At what distance from the mirror should a screen be placed in order to obtain a sharp image? Describe the nature and size of the image. If the candle is moved closer to the mirror, how would the screen have to be moved?
Q2
A needle is placed away from a convex mirror of focal length . Give the location of the image and the magnification. Describe what happens as the needle is moved farther from the mirror.
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A small candle, in size is placed at in front of a concave mirror of radius of curvature At what distance from the mirror should a screen be placed in order to obtain a sharp image? Describe the nature and size of the image. If the candle is moved closer to the mirror, how would the screen have to be moved?

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Updated on: Oct 3, 2023

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Physics Part-II (NCERT)

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A small candle, in size is placed at in front of a concave mirror of radius of curvature At what distance from the mirror should a screen be placed in order to obtain a sharp image? Describe the nature and size of the image. If the candle is moved closer to the mirror, how would the screen have to be moved?
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Text SolutionText solutionverified iconVerified

Object distance,

Radius of curvature of the concave mirror,

focal length of mirror

The image distance can be obtained using the mirror formula,


From above equation, .

Therefore, the screen should be placed 54 cm away from the mirror to obtain a sharp image. The magnification of the image is given as,



The height of the candle’s image is 5 cm. The negative sign indicates that the image is inverted and virtual. If the candle is moved closer to the mirror, then the screen will have to be moved away from the mirror in order to obtain the image.
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Practice more questions from Physics Part-II (NCERT)

Q1
A small candle, in size is placed at in front of a concave mirror of radius of curvature At what distance from the mirror should a screen be placed in order to obtain a sharp image? Describe the nature and size of the image. If the candle is moved closer to the mirror, how would the screen have to be moved?
Q2
A needle is placed away from a convex mirror of focal length . Give the location of the image and the magnification. Describe what happens as the needle is moved farther from the mirror.
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Practice questions from Physics Part-II (NCERT)

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A mobile phone lies along the principal axis of a concave mirror, as shown in Figure. Show by suitable diagram, the formation of its image. Explain why the magnification is not uniform. Will the distortion of image depend on the location of the phone with respect to the mirror?
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Question Text
A small candle, in size is placed at in front of a concave mirror of radius of curvature At what distance from the mirror should a screen be placed in order to obtain a sharp image? Describe the nature and size of the image. If the candle is moved closer to the mirror, how would the screen have to be moved?
Updated OnOct 3, 2023
TopicRay Optics and Optical Instruments
SubjectPhysics
ClassClass 12
Answer TypeText solution:1 Video solution: 24
Upvotes2242
Avg. Video Duration7 min