MEDIUM
12th West Bengal Board
IMPORTANT
Earn 100
What should be the position of an object relative to a biconvex lens so that it behaves like a magnifying glass?
Important Questions on Refraction at Spherical Surfaces and Spherical Lens
MEDIUM
12th West Bengal Board
IMPORTANT
What type of lens is an air bubble inside the water?
EASY
12th West Bengal Board
IMPORTANT
What is lens maker's formula?
MEDIUM
12th West Bengal Board
IMPORTANT
A lens when immersed in a transparent liquid becomes invisible. Under what condition does it happen?
MEDIUM
12th West Bengal Board
IMPORTANT
An object is held at the principal focus of a concave lens of focal length . Where is the image formed?
MEDIUM
12th West Bengal Board
IMPORTANT
How would a biconvex lens appear when placed in a liquid having the same refractive index as that of the lens?
MEDIUM
12th West Bengal Board
IMPORTANT
The lower half of a convex lens is painted completely dark. What happens to the image of sphere formed by the lens on the wall?
MEDIUM
12th West Bengal Board
IMPORTANT
The lower half of a convex lens is made of material of refractive index and the upper half has refractive index . If a point source of light is placed on the principal axis which kind of image is formed by it?
MEDIUM
12th West Bengal Board
IMPORTANT
A convex lens of refractive index is immersed in a medium of refractive index . How would it behave of and
