What physical quantity is same for X-rays of ...

NCERT Class XII Chapter
Electromagnetic Waves
Questions With Solutions

Question : 3 of 15

Marks: +1, -0

What physical quantity is same for X-rays of wavelength

10^{–10}

m, red light of wavelength 6800 Å and radio waves of wavelength 500 m?

Solution:

Though they all have different wavelengths and frequencies, but they have same speed i.e., speed of light 3 ×

10^8

s^{–1}

in vacuum

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