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Define Total internal reflection...

Define Total internal reflection

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A, B, C in the diagram represent rays of light incident upon a face of a right-angled prism. Before emerging from the prism, which ray (or rays) will experience total internal reflection?

Dispersion, Scattering of light, Total internal reflection, Refraction.

Assertion : The images formed by total internal reflections are much brighter than those formed by mirrorrs or lenses. Reason : There is no loss of intensity in total internal reflection.

State any one phenomenon in nature which is based on total internal reflection.

With the help of a neat labelled diagram, explain partial reflection, critical angle and total internal reflection.

The critical angle for total internal reflection in diamond is 24.5^(@) The refractive index of the diamond is

If the critical angle for total internal reflection from a medium to vacuum is 30^(@) , the velocity of light in the medium is

Assertion: in optical fibre, the diameter of the core is kept small. Reason: This smaller diameter fo the fibre should have incident angle more than the critical angle required for total internal reflection.

Explain Total internal reflection OR Under what conditionsistotal internal reflection possible? Explain it with a suitable example. Define critical angle of incidence and obtain an expression for it.

CHETANA PUBLICATION-Unit Test 3-EXERCISE
  1. The branch of Physics which deals with the production of transmission ...

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  2. The equation shown below is frac(n2 - n1)(R)= frac(n2)(v) - frac(n1)(u...

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  3. What is the magnitude of charge on an electron?

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  4. The product of the magnitude of the charge and the distance between t...

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  5. State Gauss Law

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  6. Define Dispersive Power.

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  7. Calculate the velocity of sound if the frequency of the wave is 4 Hz a...

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  8. Define Total internal reflection

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  9. Define Mirage

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  10. Write a note on periscope. (Diagram essential)

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  11. A man shoutsloudly close to a high wall, he hears an echo. If the man ...

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  12. State law of characteristics of electric lines of force.

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  13. Draw a well labelled diagram for magnifying power of a simple microsco...

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  14. State Coulombs Law and Define relative permitivity.

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  15. For a dense flint glass prism of refracting angle 10^0, Findthe anangu...

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  16. Derive an expression for couple acting on an electric dipole kept in a...

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  17. Explain the effect of change in temperature on the speed of sound in a...

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  18. Derive an expression for electric field intensity of a point on the eq...

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  19. Derive an expression for magnifying power of a compound microscope.

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  20. Derive an expression for apparent frequency when the source is moving ...

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