The orange and red wave lengths of light are able to penetrates in a sea upto a depth of:
Correct answer: B. 20 meters only
- A. 5 meters only
- B. 20 meters only
- C. 50 meters
- D. 80-100 meters
Explanation
Red and orange wavelengths are absorbed rapidly by seawater and generally penetrate only to around 20 metres. Blue and blue-green wavelengths travel much deeper, which is why deep water appears blue.
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