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# Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

## Class 10 : Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

The document Solutions of Refraction of Light (Page No- 249 & 251) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev is a part of the Class 10 Course Class 10 Physics Solutions By Lakhmir Singh & Manjit Kaur.
All you need of Class 10 at this link: Class 10

Lakhmir Singh Physics Class 10 Solutions Page No:249

Question 44: An object 50 cm tall is placed on the principal axis of a convex lens. Its 20 cm tall image is formed on the screen placed at a distance of 10 cm from the lens. Calculate the focal length of the lens.

Solution :

Lakhmir Singh Physics Class 10 Solutions Page No:251

Question 1: If the image formed by a lens is always diminished and erect, what is the nature of the lens ?

Solution : Concave lens.

Question 2: Copy and complete the diagram below to show what happens to the rays of light when they pass through the concave lens :

Solution :

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