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?
- A \( V_R > V_G > V_X > V_M \)
- B \( V_G > V_M > V_X > V_R \)
- C \( V_G > V_X > V_M > V_R \)
- D \( V_R = V_G = V_X = V_M \)
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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