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Crystalline lens of people at old age becomes milky and cloudy. This condition is called

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(a) myopia (b) lever (c) cataract (d) presbyopia

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Class 10 science 3 years 1 Answer 14 views Enlightened 0

Reason behind advance sunrise and delayed sunset

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(a) atmospheric refraction (b) total internal reflection (c) dispersion (d) reflection

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Class 10 science 3 years 1 Answer 7 views Enlightened 0

The splitting of white light into its component colours is called

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(a) refraction (b) reflation (c) dispersion (d) Tyndall effect

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Class 10 science 3 years 1 Answer 5 views Enlightened 0

.A student traces the path of a ray through a glass prism for four different values of angle of incidence. On analysing the diagrams he is likely to conclude that the emergent ray

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(a) is always parallel to the incident ray. (b) is always perpendicular to the incident ray. (c) is always parallel to the refracted ray. (d) always bends at an angle to the direction of incident ray

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Class 10 science 3 years 1 Answer 14 views Enlightened 0

The clear sky appears blue because

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(а) blue light gets absorbed in the atmosphere. (b) ultraviolet radiations are absorbed in the atmosphere. (c) violet and blue lights get scattered more than lights of all other colours by the atmosphere. (d) light of all other colours is ...

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Class 10 science 3 years 1 Answer 8 views Enlightened 0

At noon the sun appears white as

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(a) light is least scattered. (b) all the colours of the white light are scattered away. (c) blue colour is scattered the most. (d) red colour is scattered the most

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Class 10 science 3 years 1 Answer 4 views Enlightened 0

.A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in the Figures given below. In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?

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Class 10 science 3 years 1 Answer 6 views Enlightened 0

.A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in the Figures given below. In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?

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Class 10 science 3 years 0 Answers 5 views Enlightened 0

.A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in the Figures given below. In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?

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Class 10 science 3 years 0 Answers 14 views Enlightened 0

.A prism ABC (with BC as base) is placed in different orientations. A narrow beam of white light is incident on the prism as shown in the Figures given below. In which of the following cases, after dispersion, the third colour from the top corresponds to the colour of the sky?

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Class 10 science 3 years 0 Answers 5 views Enlightened 0

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