The danger signals are generally red as red light
Question and options
The danger signals are generally red as red light
- is least bright
- undergoes least scattering
- has lowest velocity
- gives comfort to eyes
Answer and explanation
Correct answer: B - undergoes least scattering
Scattering intensity varies as , so red light (longest visible wavelength) is scattered least and penetrates fog/dust to be seen from far away.
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