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प्रश्न
State one factor on which a critical angle for a given pair of media depends. The critical angle for the glass-air interface is 45° for the yellow light. Will it be equal to, less than or greater than 45° for (i) red light, (ii) blue light?
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उत्तर
The value of the critical angle for a given pair of media depends on the colour of light.
(Hint: Remember VIBGYOUR Violet has minimum ic whereas Red has maximum).
(i) For red light, the critical angle will be greater than 45°.
(ii) For blue light, the critical angle will be less than 45 °.
संबंधित प्रश्न
Name the factors affecting the critical angle for the pair of media.
How is the critical angle of a material related to its refractive index?
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Critical angle of light passing from glass to air is maximum for ____________.
Optical fibre communication uses the principle of ______.
The twinkling effect of star light is due to ______.
The critical angle is defined as the angle of incidence at which the total internal reflection starts to occur.
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.
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