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MODERN PUBLICATION-RAY OPTICS AND OPTICAL INSTRUMENTS-Revision Exercises (Very Short Answer Questions)
- If (sini)/(sinr)=n(21)gt1. Out of medium 1 and medium 2, which is mor...
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- A convex lens is placed in contact with a plane mirror. An axial point...
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- A biconcave lens made of a transparent material of refractive index 1...
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- The radii of curvature of both the surfaces of a convex lens are equal...
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- Two thin lenses of power +6 D and -2 D are in contact. What is the foc...
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- For the same value of angle of incidence, the angles of refraction in ...
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- When red light passing through a convex lens is replaced by light of b...
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- A glass lens of refractive index 1.5 is placed in a trough of liquid. ...
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- Your are given following three lense. Which two lenses will you use as...
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- Does the critical angle depend on the wavelength of the light ?
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- Due to which phenomenon, advanced sunrise and delayed sunset occur ?
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- What will be the effect on the power of a glass lens if it is immersed...
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- Define one dioptre.
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- Find the focal length of a lens having -0.5 D power.
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- What is total internal reflection of light ? What are conditions for t...
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- What are optical fibres ? What is the principle on which optical fibre...
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- What is the main requirement in fabricating optical fibres ?
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- What are para-axial rays and marginal rays ?
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- Under what condition will the object and image always be on the same s...
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- An image of an object is formed by using a convex lens. If the orienta...
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