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NCERT-LIGHT - REFLECTION AND REFRACTION-Exercise
- Define the principal focus of a concave mirror.
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- The radius of curvature of a spherical mirror is 20 cm. What is its fo...
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- Name a mirror that can give an errect and enlarged image of an object...
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- In motor vehicles, a convex mirror is attached near the driver's seat ...
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- (a) What is focal length of a convex mirror of radius of curvature 20 ...
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- A concave mirror produces three times magnified real image of an objec...
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- A ray of light travelling in air enters obliquely into water. Does the...
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- (a) The refractive index of glass is 1.5. What is the speed of light i...
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- Find out, from Table 10.3, the medium having highest optical density. ...
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- You are given kerosene, turpentine and water. In which of these does t...
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- The refractive index of diamond is 2.42. What is the meaning of this s...
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- Define one dioptre of power of a lens.
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- A convex lens forms a real and inverted image of a needle at a distanc...
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- Find the power of a concave lens of focal length 2 m.
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- Which one of the following materials cannot be used to make a lens ?
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- The image formed by a concave mirror is observed to be virtual, erect ...
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- Where should an object be placed in front of a convex lens to get a re...
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- A spherical mirror and a thin spherical lens each have a focal length ...
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- No matter how far you stand from a spherical mirror, your image appear...
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- Which of the following lenses would you prefer to use while reading sm...
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