ICSE Class 10 Physics 2018 Solved Paper
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Question : 18
Total: 78
The smoke from a fire looks white.
Which of the following statements is true?
1. Molecules of the smoke are bigger than the wavelength of light.
2. Molecules of the smoke are smaller than the wavelength of light.
Which of the following statements is true?
1. Molecules of the smoke are bigger than the wavelength of light.
2. Molecules of the smoke are smaller than the wavelength of light.
Solution:
The true statement is-
1. Molecules of the smoke are bigger than the wavelength of light.
[Reason : The particles whose size is bigger than the wavelength of light do not scatter light.]
1. Molecules of the smoke are bigger than the wavelength of light.
[Reason : The particles whose size is bigger than the wavelength of light do not scatter light.]
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