Question

1) define 1 dioptre of power of lens ?

2) _____ medium has highest optical density and ______ medium has lowest optical density .

3) Define the principal focus of a concave mirror.

4) Name a mirror that can give an erect and enlarged image of an object.

5) Why do we prefer a convex mirror as a rare view mirror in vehicles ?

6) The refractive index of diamond is 2.42 . what is the meaning of this statement ?

7) An object 5cm in length is held 25cm away from a converging lens of focal length 10cm . draw the ray diagram and find the position,size and the nature of the image formed.

8) A concave lens of focal length 15cm forms an image 10 cm from the lens . how far is the object placed from the lens ? Draw the ray diagram.​​

Answer 1

ur answer is attached above ....4 pics are attached ...do refer it ....

I have attached pic with some effects to make the pic more clear ....

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