PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 5 - Light>EXERCISE>Q 4

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10th West Bengal Board

IMPORTANT

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Water and glass are optically rarer than air.

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Important Questions on Light

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10th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 5 - Light>EXERCISE>Q 5

Light has a constant speed of

3 \times 10^{8} {ms}^{- 1}

for all colours or wavelengths in vacuum.

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IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 5 - Light>EXERCISE>Q 6

UV-radiations are invisible.

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10th West Bengal Board

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PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 5 - Light>EXERCISE>Q 7

For different colours, wavelength is same.

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IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 5 - Light>EXERCISE>Q 8

Object at focus of a convex lens produces image at infinity.

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10th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 5 - Light>EXERCISE>Q a

Find the odd-one out from the following.

Convexo-concave lens, concavo-convex lens, equi-convex lens, plano-convex lens

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10th West Bengal Board

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PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 5 - Light>EXERCISE>Q b

Find the odd one out from the following.

Speed, wavelength, frequency, intensity.

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10th West Bengal Board

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PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 5 - Light>EXERCISE>Q c

Find the odd one out from the following.

$μ, C, f, λ$

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10th West Bengal Board

IMPORTANT

PHYSICAL SCIENCE & ENVIRONMENT CLASS 10>Chapter 5 - Light>EXERCISE>Q d

Find the odd-one out.

UV rays, X-rays, Gamma rays, IR rays.