Refraction of Light
Refraction of Light: Overview
This topic states that refraction occurs when a ray of light passes from one optical medium to another medium. It also briefs on Snell’s Law of Refraction.
Important Questions on Refraction of Light
The type of mirror or lens used in cameras is _____.
A concave lens has focal length . At what distance should the object from the lens be placed so that it forms an image at from the lens? Also find the magnification produced by the lens.
The change in focal length of an eye lens is caused by the action of the
Where should an object be placed in front of a convex lens to get a real image of the size of the object?
Draw a ray diagram and describe the image formation by a concave lens when an object is placed at (i) infinity (ii) a finite distance.
A convex lens forms a real and inverted image of a needle at a distance of from it. Where is the needle placed in front of the convex lens, if the image is equal to the size of the object? Also find the power of the lens.
Define the term critical angle.
Explain the refraction of light through a rectangular glass slab with the help of a labelled diagram.
What is meant by the dual nature of light?
Define power of a lens. What is its unit?
A concave lens has focal length . At what distance should the object from the lens be placed so that it forms an image at from the lens? Also find the magnification produced by the lens.
