List of top Science Questions on Refraction of Light asked in UP Board X

A lemon placed in a beaker full of water appears larger than its real size, when viewed sideways. The light phenomenon responsible is -
The refractive index of glass is 1.5. The speed of light in air is \(3 \times 10^8\) m/s. The speed of light in glass will be
Explain the phenomenon of refraction of light.
Which lens is used in correcting the defect of long-sightedness (far-sightedness)?
When white light passes through a prism of glass, the colour of a light ray bent maximum towards the base of the prism is:
When light rays move away from the normal while going from one medium to another, then they move from:
When white light passes through a prism, the colour of the emergent light distant from the base of the prism is:
Which one of the following ray diagrams (for a concave/diverging lens) is correct?
The colour of white light which is deviated maximum on passing through the glass prism is:
Draw the ray diagrams to show the formation of images when:

[(a)] Object is placed in front of a converging lens between its focus (F) and optical centre (O)
[(b)] Object is placed between focus (F) and twice the distance of focus (2F)
State the nature of the images.
A concave lens is used:
On passing a ray of white light through a prism, the colour which has minimum deviation is:
A light ray passes through a point inside a lens without any deviation. That point of the lens will be its:
What are the laws of refraction? An object of 3 cm is placed perpendicular to the principal axis of a convex lens. Focal length of the lens is 30 cm and the distance of the object from lens is 10 cm. Find the position, size, and nature of the image. Can we observe this image on a screen?
Magnified virtual image of an object can be formed by:
The unit of the power of the lens is: