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Solutions of Reflection of Light (Page No- 210) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

Class 10 Physics Solutions By Lakhmir Singh & Manjit Kaur

Class 10 : Solutions of Reflection of Light (Page No- 210) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

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Lakhmir Singh Physics Class 10 Solutions Page No:210

Question 11: An object is placed 15 cm from (a) a converging mirror, and (b) a diverging mirror, of radius of curvature 20 cm. Calculate the image position and magnification in each case.

Solution :

Solutions of Reflection of Light (Page No- 210) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

fig. formation of image by the 'concave mirror when the object Is palced between its pole and focus. 

(b) f = -20cm. u = -10cm. v= ?

We know that 

Solutions of Reflection of Light (Page No- 210) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

(c) Characteristics of image formed
(i) Image is virtual.
(ii) Image is erect. 

Question 12: An object 20 cm from a spherical mirror gives rise to a virtual image 15 cm behind the mirror. Determine the magnification of the image and the type of mirror used.

Solution : u = -20cm v = 15cm (virtual image)

We know that 
Solutions of Reflection of Light (Page No- 210) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

The mirror used is of convex type. 

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