EASY
Earn 100

Which type of lens always forms diminished images?

50% studentsanswered this correctly

Important Questions on Light Energy

MEDIUM
Which lens is used to correct hypermetropia?
MEDIUM
Which phenomenon is responsible for the convergence of light rays in a convex lens?
MEDIUM

Which one of the following factors affects the field of view of a lens?

HARD
What happens to the focal length of a lens when immersed in water?
EASY
What type of image is formed by a concave lens irrespective of object position?
MEDIUM
What happens to the power of a lens if its focal length is halved?
EASY
A lens with focal length -15 cm is:
HARD
When a plane mirror is placed horizontally on level ground at a distance of 60 m from the foot of a tower, the top of the tower and its image in the mirror subtend an angle of 90° at the corner of the mirror nearer to the foot of tower. The height of the tower is
HARD
Where does the image form when an object is placed at the focus of a convex lens?
HARD
What is the nature of the image formed by a convex lens when the object is between F and the optical center?
MEDIUM
Which type of lens is used to correct myopia?
MEDIUM
What is the sign convention for the focal length of a convex lens?
EASY
Which material is commonly used to make lenses?
MEDIUM
Which of the following statements is true for a concave lens?
MEDIUM
In optics, the viewable area that can be imaged by a lens system is called the _____.
MEDIUM
What happens to the refractive index of a lens if the medium outside has the same refractive index?
EASY
Cotyledons are also called-
MEDIUM
What does the term "field of view" describe in the context of a lens system?
MEDIUM
Which lens is used as a magnifying glass?
MEDIUM
Which of the following is true for the principal axis of a spherical lens?