Q341
Open questionAbility to distinguish two closely placed objects is
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Q342
Open questionLight appears to travel in a straight line because
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Q343
Open questionA lemon kept in water in a glass tumbler appears to be bigger than its actual size when viewed from the outside. This is because of:
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Q344
Open questionBending of light rays in denser medium is termed as
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Q345
Open questionDue to . . . . . . . . the star appears twinkling in the sky.
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Q346
Open questionDirect viewing of Sun during total solar eclipse causes irreversible damage to eyes. The retinal burn is caused by which one of the following components of the Sun rays?
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Q347
Open questionIn which of the following cases can Total Internal Reflection (when angle of incidence is greater than the critical angle) take place?
When light travels from
When light travels from
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Q348
Open questionAn object is placed in front of a convex mirror at a point between the infinity and the pole of the mirror. The image formed will be.
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Q349
Open questionWhich one of the following colours is seen in the middle of a Rainbow?
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Q350
Open questionA ray of light passing through a lens . . . . . . . . will pass without any deviation.
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Q351
Open questionThe colour of light is determined by its
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Q352
Open questionWhat is the substance through which light can pass?
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Q353
Open questionA person wears spectacles with concave lenses. It means that normally (when not using glasses) the image of distant objects is focused in his eyes
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Q354
Open questionLEDs and CFLs are replacing ordinary bulbs for illumination due to
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Q355
Open questionRajat has hypermetropia. What type of lens will the ophthalmologist recommend to correct his vision?
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Q356
Open questionGolden view of sea shell is due to
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Q357
Open questionThe Sun and the Moon appear elliptical near the horizon because of
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Q358
Open questionWhen a mirror is rotated by an angle θ, the reflected ray will rotate by
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Q359
Open questionWhen a ray of light travels from a denser medium to a rarer medium, it bends:
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Q360
Open questionA disorder in which a person cannot see a distant object clearly is called.
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