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प्रश्न
A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incident is ______.
पर्याय
0°
45°
60°
90°
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उत्तर
A light ray does not bend at the boundary in passing from one medium to the other medium if the angle of incident is 0°.
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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.
Name the factors affecting the critical angle for the pair of media.
Draw the diagram of a right-angled isosceles prism which is used to make an invented image erect.
The diagram shows a point source P inside a water container. Three rays A, B, and C starting from P are shown up to the water surface. Show in the diagram the path of these rays after striking the water surface. The critical angle for the water-air pair is 48°.
Total internal reflection can take place only if light is travelling from ______.
Optical fibre communication uses the principle of ______.
The twinkling effect of star light is due to ______.
Optical Fibres are based on the phenomenon of dispersion.
State the condition under which total internal reflection occurs. Give the mathematical expression for total internal reflection.
A ray of light passes through a prism of refractive index `sqrt2` as shown in the figure. Find:
- The angle of incidence (∠r2) at face AC.
- The angle of minimum deviation for this prism.
