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STANDARDPhysics-Electromagnetic Waves

STANDARD Physics Radio Waves MCQ Question

Type: MCQ-numerical-Medium-Class 12

A radio can tune to any station in 7.5 MHz to 12 MHz band. The corresponding wavelength band is

A

40 m to 25 m

B

30 m to 25 m

C

25 m to 10 m

D

10 m to 5 m

Correct Answer

Option A

Detailed Explanation

Here, ν₁ = 7.5 MHz, ν₂ = 12 MHz. λ₁ = c/ν₁ = 3 × 10⁸ / 7.5 × 10⁶ = 40 m and λ₂ = c/ν₂ = 3 × 10⁸ / 12 × 10⁶ = 25 m.

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