Scattering and the Tyndall effect

1. A.
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B.
   Both (A) and (R) are true and (R) is not correct explanation of (A).
3. C.
   (A) is true, but (R) is false.
4. D.
   (A) is false, but (R) is true.

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1. A.
   Both (A) and (R) are true and (R) is the correct explanation of (A).
2. B.
   Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. C.
   (A) is true, but (R) is false.
4. D.
   (A) is false, but (R) is true.

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1. A.
   scattering of light
2. B.
   dispersion of light
3. C.
   reflection of light
4. D.
   internal reflection of light

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1. A.
   The size of the molecules of air is larger than the wavelength of visible light.
2. B.
   The blue light has a wavelength about $1{\cdot}8$ times greater than that of red light.
3. C.
   When sunlight passes through the fine particles in air, they scatter the blue colour of visible light more strongly than red.
4. D.
   The light of red colour is scattered the most by fog or smoke.

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