Question
What is the ratio of velocities of light rays of wavelengths $4000^{\circ} \mathrm{A}$ and $8000^{\circ} \mathrm{A}$ in vacuum?(A) $1: 2$(B) $1: 1$(C) $2: 1$(D) cannot be determined
Step 1
This is a fundamental principle of physics, known as the constancy of the speed of light. It is represented by the symbol 'c' and its value is approximately $3 \times 10^8$ m/s. Show more…
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