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When light rays enter the eye, most of the refraction occurs at the

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(a) crystalline lens (b) outer surface of the cornea (c) iris (d) pupil

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Class 10 science 3 years 1 Answer 27 views Enlightened 0

The bluish colour of water in deep sea is due to

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(a) the presence of algae and other plants found in water (b) reflection of sky in water (c) scattering of light (d) absorption of light by the sea

Class 10 science 3 years 0 Answers 7 views Enlightened 0

The clear sky appears blue because

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(a) 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 5 views Enlightened 0

The clear sky appears blue because

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Class 10 science 3 years 0 Answers 8 views Enlightened 0

At noon the sun appears white as

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(a) light is least scattered (b) all the colors of the white light are scattered away (c) blue color is scattered the most (d) red color is scattered the most

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Class 10 science 3 years 1 Answer 7 views Enlightened 0

.A person cannot see distinctly objects kept beyond 2 m. This defect can be corrected by using a lens of power [NCERT Exemplar Problems]

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(a) + 0.5 D (b) – 0.5 D (c) + 0.2 D (d) – 0.2 D

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Class 10 science 3 years 1 Answer 12 views Enlightened 0

2.The air layer of atmosphere whose temperature is less then the hot layer behave as optically

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(a) denser medium (b) rarer medium (c) inactive medium (d) either denser or rarer medium

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Class 10 science 3 years 1 Answer 25 views Enlightened 0

1.When white light enters a prism, it gets split into its constituent colours. This is due to

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(a) different refractive index for different wavelength of each color (b) each colors has same velocity in the prism. (c) prism material have high density. (d) Scattering of light

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Class 10 science 3 years 1 Answer 5 views Enlightened 0

Light from the Sun falling on a convex lens will converge at a point called

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(a) centre of curvature (b) focus (c) radius of curvature (d) optical centre

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Class 10 science 3 years 1 Answer 12 views Enlightened 0

The refractive index of water is 1.33. The speed of light in water will be

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(a) 1.33 × 108 m/s (b) 3 × 108 m/s (c) 2.26 × 108 m/s (d) 2.66 × 108 m/s

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Class 10 science 3 years 2 Answers 10 views Enlightened 0

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