Q1281
Open questionWhat is the wavelength of visible spectrum ?
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Q1282
Open questionWhich layer of the earth's atmosphere reflect back the radio waves to the earth's surface ?
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Q1283
Open questionWhere are mesons found ?
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Q1284
Open questionWho discovered X-ray?
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Q1285
Open questionWhich of the following has the lowest frequency?
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Q1286
Open questionWhich of the following is not true about X-rays?
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Q1287
Open questionX–rays are
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Q1288
Open questionX-rays region lies between
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Q1289
Open questionIn the absence of ozone layer, which rays will enter into atmosphere?
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Q1290
Open questionIn MRI machine, which one of the following is used?
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Q1291
Open questionTape recorder should not be kept near one of the following things :
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Q1292
Open questionEddy current is generated by
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Q1293
Open questionWhich of the following circuit elements is used to ''block" DC in an electronic circuit ?
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Q1294
Open questionA photostat machine works on
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Q1295
Open questionOn which of the following techniques photostate machine works ?
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Q1296
Open questionWhich of the following group of elements are diamagnetic?
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Q1297
Open questionAt the Curie temperature, the ferromagnetic materials get converted into
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Q1298
Open questionIn the process of magnetisation of a bar
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Q1299
Open questionMagnetic domains normally occur in
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Q1300
Open questionA small piece of a substance is weakly attracted by a strong magnetic field. The substance is
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