an object is placed at 60 cm from a concave lens. The image is formed at a distance of 20 cm from the optical center. Find the focal length of the lens? Is the lens coverging or diverging?
One who wants brainlist mark, answer this question. I will follow you.....
Share
Verified answer
GiVeN :-
○ Object distance, u = -60 cm
○ Image distance, v = -20 cm
To FiNd :-
AcKnOwLeDgEmEnT :-
LENS FORMULA is as follows :-
SoLuTiOn :-
Applying the lens formula :-
A concave lens is called as 'Diverging lens'.
When light passes through the lens, it bends the light rays towards each other.
The concave lens spreads out the light when it passes through the lens.
Verified answer
Given
An object is placed at 60 cm from a concave lens. The image is formed at a distance of 20 cm from the optical center.
To find
Find the focal length of the lens? Is the lens coverging or diverging?
Solution
Apply lens formula
Hence, the focal length of concave lens is -30cm and it is a diverging lens