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CUET · PHYSICS · PYQ PAPER 2023

Speed of the Radiowaves, Gamma rays, X-rays and Microwaves are represented by \( V_R, V_G, V_X \) and \( V_M \), respectively in free space. Which option is correct?

  1. A \( V_R > V_G > V_X > V_M \)
  2. B \( V_G > V_M > V_X > V_R \)
  3. C \( V_G > V_X > V_M > V_R \)
  4. D \( V_R = V_G = V_X = V_M \)
Verified Solution

Answer & Solution

Correct Answer

(D) \( V_R = V_G = V_X = V_M \)

Step-by-step Solution

Detailed explanation

In free space (vacuum), all electromagnetic waves-regardless of their frequency or wavelength-travel at the same constant speed, which is the speed of light ( \(c \left.\approx 3 \times 10^8 m / s \right)\). While their energies and frequencies differ, their velocity remains…
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