Spherical Lenses
Spherical Lenses: Overview
In this topic, we will know about the spherical lenses with their classification into convex lens and concave lens. We will also learn that the lenses can change the direction of light with their uses.
Important Questions on Spherical Lenses
Which lens is used to correct hypermetropia?
Which type of lens always forms diminished images?
What happens to the refractive index of a lens if the medium outside has the same refractive index?
What is the nature of the image formed by a convex lens when the object is between F and the optical center?
What happens to the power of a lens if its focal length is halved?
What type of image is formed by a concave lens irrespective of object position?
Where does the image form when an object is placed at the focus of a convex lens?
Which of the following is true for the principal axis of a spherical lens?
What is the sign convention for the focal length of a convex lens?
Which material is commonly used to make lenses?
What is the shape of the image formed by a concave lens when the object is placed at infinity?
A convex lens has a focal length of 10 cm. What is its power?
Which type of lens is used to correct myopia?
What happens to the focal length of a lens when immersed in water?
