Question

Glass has properties that allow the infrared rays of _____wavelength to pass through, but it does not allow the infrared rays of _____ wavelength to pass through it.

• A. shorter, longer
• B. longer, shorter
• C. higher, lower
• D. all the above

Answer 1

The correct option is A

shorter, longer

Explanation of the correct option-

1. Shorter wavelength light can be absorbed easily by the electrons present in the glass.
2. Thus glass can easily absorb infrared rays of a shorter wavelength and allow them to pass through them.
3. Longer wavelength rays cannot be absorbed by the electrons present in the glass thus it blocks the infrared light of longer wavelength and doesn’t allow it to pass through it.

Thus, glass has properties that allow the infrared rays of a shorter wavelength to pass through, but it does not allow the infrared rays of a longer wavelength to pass through it.

Hence, the correct option is (A).