Advertisements
Advertisements
प्रश्न
Which colour of light has a higher critical angle? Red light or green light.
Advertisements
उत्तर
The critical angle for 'Red' colour is higher than that of green light.
APPEARS IN
संबंधित प्रश्न
A ray of light travels from water to air as shown in the diagram given below :
1) Copy the diagram and complete the path of the way. Given the critical angle for water is 48°.
2) State the condition so that internal reflection occurs in the above diagram.
The figure shows a ray of light falling normally on the face AB of an equilateral glass prism having refractive index`3/2`, placed in water of refractive index `4/3`.Will this ray suffer total internal reflection on striking the face AC? Justify your answer.
Draw the diagram of a right-angled isosceles prism which is used to make an invented image erect.
(i) Define critical angle.
(ii) State one important factor which affects the critical angle of a given medium.
What is meant by the term ‘critical angle’?
A ray of light passes through a right-angled prism as shown in the figure. State the angles of incidence at the faces AC and BC.
A green light is incident from the water to the air-water interface at the critical angle (C). Select the correct statement.
Optical fibre communication uses the principle of ______.
A given ray of light suffers minimum deviation in an equilateral prism P. Additional prism Q and R of identical shape and of the same material as P are now added as shown in the figure. The ray will now suffer ______.
