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9th ICSE
IMPORTANT
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The magnification for a mirror is -2. How are u and v related?

Important Questions on Light

HARD
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 8 - Light>CHAPTER EXERCISE>Q 19
A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it. Find the focal length of the mirror. 
HARD
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 8 - Light>CHAPTER EXERCISE>Q 19
A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it. Find the position of image. 
MEDIUM
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 8 - Light>CHAPTER EXERCISE>Q 20
When an object of height 1 cm is kept at a distance 4 cm from a concave mirror, its erect image of height 1.5 cm is formed at a distance 6 cm behind the mirror. Find the focal length of mirror.
HARD
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 8 - Light>CHAPTER EXERCISE>Q 21
An object is placed at 4 cm distance in front of a concave mirror of radius of curvature 24 cm. Find the position of image. Is the image magnified?
HARD
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 8 - Light>CHAPTER EXERCISE>Q 22
At what distance in front of a concave mirror of focal length 10 cm, an object be placed, so that its virtual image of size five times that of the object is obtained?
HARD
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 8 - Light>CHAPTER EXERCISE>Q 23
A 10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. What is the focal length of this mirror?
HARD
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 8 - Light>CHAPTER EXERCISE>Q 24
An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image. 
HARD
9th ICSE
IMPORTANT
All In One ICSE Physics>Chapter 8 - Light>CHAPTER EXERCISE>Q 25
An object 5.0 cm in length is placed at a distance of 20 cm in front of a convex mirror of radius of curvature 30 cm. Find the position of image, its nature and size.