Q1261
Open questionGamma rays can cause
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Q1262
Open questionGreen house effect is the heating up of the Earth's atmosphere which is due to
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Q1263
Open questionVisible light has a higher frequency than
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Q1264
Open questionWhich of the following has the longest wavelength?
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Q1265
Open questionNight photography and photopraphy in mist and fog are possible using
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Q1266
Open questionA car parked in the sun with its windows closed gets terribly hot inside. This is due to
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Q1267
Open questionTo measure the speed of an approaching car a police officer shines
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Q1268
Open questionThe device used for measuring the wavelength of X-rays is
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Q1269
Open questionIf the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV, lVIS and lIR respectively, then which of the following gives the correct relationship among these wavelengths?
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Q1270
Open questionTransition ions absorb light in :
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Q1271
Open questionWhich one type of radiation has the longest wave length
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Q1272
Open questionForged documents are detected by
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Q1273
Open questionThe radiation initially produced in fluorescent tube is
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Q1274
Open questionIn a vacuum, all electromagnetic waves have the same
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Q1275
Open questionUltra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by
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Q1276
Open questionWhich one among the following is not an electromagnetic wave?
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Q1277
Open questionElectromagnetic waves are transverse in nature is evident by
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Q1278
Open questionWhich of the following parts of the sunlight makes the solar cooker hot ?
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Q1279
Open questionIn the atmosphere ultraviolet rays are absorbed by
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Q1280
Open questionEnergy of Ultraviolet rays is great than
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