A glass sphere of radius 15 cm has a small bubble 6 cm from its centre. The bubble is viewed along a diameter of the sphere from the side on which it lies. How for from the surface will it appear to be if the refractive index of glass is 1.5 ?
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The longest side of a triangle is three times the shortest side and the third side is 2 cm shorter than the longest side if the perimeter of the trian
Correct Answer - 9 cm Let the length of the shotest side of the triangle be x cm . Then length of the longest side = 3 x cm Length of...
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A metallic sphere of radius R has a small bulge of hemispherical shape on its surface. The radius of the bulge is r. If a charge Q is given to the sph
Correct Answer - `(Qr)/(2R)`
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A Soap bubble has a thickness of 90 nm and its refractive index is `mu" = 1.4"`. What colour does the bubble appear to be at a point on its surface cl
Correct Answer - green
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A particle of mass `m` and charge `-q` moves along a diameter of a uniformly charged sphere of radius `R ` and carrying a total charge ` +Q`. Find the
Correct Answer - `[(1)/(2pi) sqrt((qQ)/(4 pi in_(0)mR^(3)))]`
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A solid glass sphere with radius R and an index of refraction `1.5` is silvered over one hemisphere. A small object is located on the axis of the sphe
Correct Answer - On the pole of mirror
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A glass sphere with `10 cm` radius has a `5 cm` radius spherical hole at its centre. A narraow beam of parallel light is directed into the sphere. Whe
Correct Answer - 5 cm of the left of the surface of sphere
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A hemispherical portion of the surface of a solid glass sphere (mu = 1.5) of radius r is silvered to make the inner side reflecting. An object is plac
Correct Answer - At the pole of silvered face
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An object is placed `50 cm` from the surface of a glass sphere of radius `10 cm` along the diameter. Where will the final image be formed after refrac
Correct Answer - At 20 m from the centre of the sphere
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The volume of a sphere (V) varies directly as the cube of its radius. The volume of the sphere of radius 3 cm is ` 36 pi cm^(3)`. What is the volume o
Correct Answer - ` 4500 pi cm^(3)`
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