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If the critical angle for total internal reflection from a medium to vacuum is 30°, then the speed of light in the medium is

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Important Questions on Ray Optics

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 66
If a glass rod is immersed in a liquid of same refractive index, then it will appear
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 67
A metal coin is at the bottom of a beaker filled with a liquid of refractive index 43 to height of 6 cm. To an observer looking from above the surface of the liquid, coin will appear at a depth of 
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 68
A transparent cube of 15 cm edge contains a small air bubble. Its apparent depth when viewed through one face is 6 cm and when viewed through the opposite face is 4 cm. Then the refractive index of the material of the cube is
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 69

If the critical angle for total internal reflection from a medium to vacuum is 30°. Then the velocity of light in the medium is

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 70

For the given incident ray as shown in the figure, the condition of total internal reflection of the ray will be satisfied if the refractive index of a block will be:

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 71

A small coin is resting on the bottom of a beaker filled with a liquid. A ray of light from the coin travels up to the surface of the liquid and moves along its surface (see figure).

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How fast is the light travelling in the liquid?

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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 72
Which of the following is used in optical fibers?
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Alpha Question Bank for Medical: Physics>Chapter 30 - Ray Optics>Exercise-1>Q 73
Transmission of light in optical fibre is due to