Q361
Open questionThe technique used to transmit auto signals in television broadcasts is
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Q362
Open questionThe head mirror used by ENT doctors is
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Q363
Open questionIf the radius of curvature of a concave mirror is 6.2 cm, then its focal length will be . . . . . . . . cm.
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Q364
Open questionWhich one of the following statement is not true for a person suffering from hypermetropia?
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Q365
Open questionWhen light enters the rarer medium through a denser medium, what is the effect on its speed?
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Q366
Open questionPerson who is colourblind can not distinguish between
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Q367
Open questionAccording to law of reflection
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Q368
Open questionWhen light is incident on a bright surface, . . . . . . . . phenomenon of reflection occurs.
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Q369
Open questionOptical fibres are based on the phenomenon of
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Q370
Open questionFocal length of concave lens . . . . . . . . it occurs
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Q371
Open questionRainbow is formed due to
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Q372
Open questionThe red colour of the Sun at Sunset and Sunrise is due to
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Q373
Open questionWhat is the reason for the sun to appear long circular at sunrise and sunset?
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Q374
Open questionThis is not a use of a concave mirror
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Q375
Open questionThe primary colours used in colour television are
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Q376
Open questionA microscope used in pathological laboratories forms
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Q377
Open questionWhat is the velocity of light in vacuum?
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Q378
Open questionThe focal length of a convex lens is . . . . . . . .
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Q379
Open questionWhen light enters the denser medium through the rare medium, . . . . . . . .
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Q380
Open questionThe . . . . . . . . oval spot in the human eye is the area of best vision
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