MEDIUM
12th West Bengal Board
IMPORTANT
Earn 100
Explain with diagrams why a convex lens is called a converging lens and a concave lens a diverging lens.
Important Questions on Refraction at Spherical Surfaces and Spherical Lens
MEDIUM
12th West Bengal Board
IMPORTANT
Is it possible for a given lens to act as a converging lens in one medium and a diverging lens in another medium?
EASY
12th West Bengal Board
IMPORTANT
Explain the centre of curvature of a lens.
EASY
12th West Bengal Board
IMPORTANT
Explain the optical centre of a lens.
EASY
12th West Bengal Board
IMPORTANT
Explain the focus of a lens.
EASY
12th West Bengal Board
IMPORTANT
Explain the first focal length.
EASY
12th West Bengal Board
IMPORTANT
Explain the second focal length.
EASY
12th West Bengal Board
IMPORTANT
Explain the following term.
Aperture
MEDIUM
12th West Bengal Board
IMPORTANT
What type of lens would you use and where the object is to be placed in order to obtain a real and magnified image? Draw neat diagram and mention the practical application.
