HARD
12th Andhra Pradesh Board
IMPORTANT
Earn 100

A ray of light is incident at an angle of on the face of a prism of angle . The emergent ray makes an angle of with the incident ray. Calculate the refractive index of the material of the prism.

Important Questions on Ray Optics and Optical Instruments
MEDIUM
12th Andhra Pradesh Board
IMPORTANT
Two lenses of power and respectively, are placed in contact. Calculate the focal length of the combination.

MEDIUM
12th Andhra Pradesh Board
IMPORTANT
Some rays falling on a converging lens are focussed from the lens. When a diverging lens is placed in contact with the converging lens, the rays are focussed from the combination. What is the focal length of the diverging lens?

MEDIUM
12th Andhra Pradesh Board
IMPORTANT
A double convex lens of focal length is used as a magnifying glass in order to produce an erect image which is times magnified. What is the distance between the object and the lens?

HARD
12th Andhra Pradesh Board
IMPORTANT
A compound microscope consists of an objective lens of focal length and an eyepiece of focal length . When an object is placed at from the objective lens, the final image is at from the eye lens. What is the distance between the lenses? What is the total linear magnification?

HARD
12th Andhra Pradesh Board
IMPORTANT
The distance between two point sources of light is . Where should you place a converging lens of focal length , so that the images of both sources are formed at the same point?

HARD
12th Andhra Pradesh Board
IMPORTANT
Find two positions of an object, placed In front of a concave mirror of focal length , so that the Image formed is times the size of the object.

HARD
12th Andhra Pradesh Board
IMPORTANT
When using a concave mirror, the magnification is found to be times as much when the object is from the mirror as it is with the object at from the mirror, the image being real in each case. What Is the focal length of the mirror?

HARD
12th Andhra Pradesh Board
IMPORTANT
The focal length of the objective and eyepiece of a compound microscope are and respectively. If an object is placed at a distance of from the objective, what is the magnification produced by the microscope?
