Advertisements
Advertisements
Question
When a ray of light from air enters a denser medium, it ______.
Options
Bends away from the normal
Bends towards the normal
Goes undeviated
Is reflected back
Advertisements
Solution
When a ray of light from air enters a denser medium, it bends towards the normal.
APPEARS IN
RELATED QUESTIONS
State the dependence of angle of deviation on the refractive index of the material of the prism.
Draw the diagram given below and clearly show the path taken by the emergent ray.

Which colour of light travels fastest in any medium except air?
Fill in the blanks to complete the following sentence
When light travels from a denser to a rarer medium, its speed ……………….
A ray of light enters a glass slab ABDC as shown in figure and strikes at the centre O of the circular part AC of the slab. The critical angle of glass is 42°. Complete the path of the ray till it emerges out from the slab. Mark the angles in the diagram wherever necessary.

Which colour of light travels fastest in any medium except air?
Draw a ray diagram showing the lateral displacement of a ray of light when it passes through a parallel sided glass slab.
Glass is transparent in nature. Why does glass powder look opaque? When water is poured over it, it again becomes transparent. Why?
Comment on the statement ‘The refractive index of glass is 3/2.’
Draw a diagram of a prism and label:
(i) the base,
(ii) the refracting surfaces,
(iii) the refracting edge,
(iv) the refracting angle in it.
