You are given a transparent glass sheet. Suggest any two ways to make it translucent without breaking it.
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Some of the very old glass objects appear slightly milky instead of being transparent. Why ?
Reallignment of molecules takes place due to movement because of constant heating and cooling.
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You are given prisms made of crown glass and flint glass with a wide variety of angles.
(a)Place the two prisms beside each other. Make sure that their bases are on the opposite sides of the incident white light, with their faces touching each other. When the...
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Suggest any four ways through which women participation in sport across age group can be enhanced.
Four ways to enhance women participation: (i) Do not treat them as low profile popularity of sports in community is bound to promote women programmes of sports. (ii) Provide the encouragement at...
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Suggest some precautions to be taken to prevent the roof of a tin sheet from flying away during a fierce wind storm.
(i) Put heavy stones on it. (ii) Screw it tight.
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Classify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous:
Opaque : A piece of rock, a sheet of aluminium, a mirror, a wooden board, a CD, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a...
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You are provided with two identical metal bars. One out of the two is a magnet. Suggest two ways to identify the magnet.
Hint: (1) By suspending the metal bars (2) By attracting iron filings (3) Using another magnet
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A thin transparent sheet is placed in front of a Young's double slit. The fringe-width will (a) increase (b) decrease
(c) remain same EXPLANATION: The fringe width is given as w = Dλ/d where D = distance of the screen from the slits d = distance of slits. The wavelength λ remains the same...
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You have been given some mishri pieces (lumps of sugar). Suggest some ways to dissolve them quickly.
To dissolve the mishri quickly. First it should be crushed to make powder of it. Then after adding it into water, the mixture should be stirred thoroughly. The mixture could also...
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Under what condition does a biconvex lens of glass having a certain refractive index act as a plane glass sheet when immersed in a liquid?
When μL = μg where μL = Refractive index of liquid and μg = Refractive index of glass
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Suggest any four ways through which women participation in sport across age group can be enhanced
(a) Modification in Legislation. (b) Better coverage of women sports (c) Improvement in fitness and wellness movements (d) Educating Women (e) Increasing women coaches. (f) Ensuring personal safety of women. (g) Giving more opportunities for women...
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