EASY
10th Mizoram Board
IMPORTANT
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The magnification produced by a plane mirror is +1. What does this mean? 

Important Questions on Light - Reflection and Refraction

HARD
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 10 - Light - Reflection and Refraction>EXERCISES>Q 14
An object 5 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 the image, its nature, and size.
MEDIUM
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 10 - Light - Reflection and Refraction>EXERCISES>Q 15
An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed so that a sharply focused image can be obtained? Find the size and nature of the image.
EASY
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 10 - Light - Reflection and Refraction>EXERCISES>Q 16
Find the focal length of a lens with power -2.0 diopter. What type of lens is this?
EASY
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 10 - Light - Reflection and Refraction>EXERCISES>Q 17
A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging?