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8. Electromagnetic waves — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics8. Electromagnetic waves1 Mark
MCQ
Ozone layer blocks the radiation of wavelength
  • ✓
    Less than $3 \times 10^{-7} \,m$
  • B
    Equal $3 \times 10^{-7} \,m$
  • C
    More than $3 \times 10^{-7} \,m$
  • D
    all of the above
✓

Answer

Correct option: A.
Less than $3 \times 10^{-7} \,m$
a
(a) Radiation having wavelength less than $4 \times 10^{-7} \,m$ are blocked by ozone layer

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