CUET Preparation Today
The ratio of speeds of X-rays of wavelength $10^{-9}$ m and visible light of wavelength $10^{-7}$ m in vacuum is: |
100 : 1 1 : 100 1 : 1 10 : 1 |
1 : 1 |
The correct answer is Option (3) → 1 : 1 Speed of electromagnetic waves are equivalent to speed of light always. |
