Please select a subject first
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An a.c. generator changes the ______energy to ______ energy.
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State two safety measures to be taken while establishing a nuclear power plant.
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What is meant by nuclear waste?
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Name the principle on the basis of which optical fibres work.
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How does a ray of light bend when it travels from rarer to denser medium
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How does a ray of light bend when it travels from denser to rarer medium.
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How does a ray of light bend when it travels from when it is normal to the interface of the two media.
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Why do diamonds sparkle?
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Can light be ‘piped’ like sound in a doctor’s stethoscope?
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Write down the relationship between the critical angle and the refractive index of the medium.
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Express the refractive index μ of a medium in terms of the angle of incidence i in air and the angle of refraction r in a denser medium.
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If a ray of light passes from medium I to medium II without any change of direction, what can be said about the refractive indices of these media (angle I is not 0)?
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How are critical angles related to the refractive index of the medium?
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State two advantages of using a right-angle prism as a reflector, rather than a plane mirror.
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State the S.I. unit of electrical resistance and define it.
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Images formed by totally reflecting prisms are brighter than the image formed by ordinary reflected light, why?
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How does the resistance of a metallic wire depend on the length of wire?
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How does the resistance of a metallic wire depend on the thickness of wire?
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A ray of light incident at an angle of incidence ‘i’ passes through an equilateral glass prism such that the refracted ray inside the prism is parallel to its base and emerges from the prism at an angle of emergence ‘e’.
How is the angle of emergence ‘e’ related to the angle of incidence ‘i’?
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A ray of light incident at an angle of incidence ‘i’ passes through an equilateral glass prism such that the refracted ray inside the prism is parallel to its base and emerges from the prism at an angle of emergence ‘e’.
What can you say about the value of the angle of deviation in such a situation?
Concept: undefined >> undefined
