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GUJCET · Physics · Electromagnetic Waves
For a radiation of 9 GHz passing through air. The number of waves passing through 1 m length is __________.
- A 30
- B 5
- C 20
- D 3
Answer & Solution
Correct Answer
(A) 30
Step-by-step Solution
Detailed explanation
Number of waves \(= f/c \) Number of waves \(= (9 \times 10^9 \text{ Hz}) / (3 \times 10^8 \text{ m/s}) = 30 \)
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