CUET · PHYSICS · PYQ PAPER 2023
For transmitting a modulated signal of wave length \( \lambda \), the antenna should have minimum size:
- A \( \lambda \)
- B \( \lambda/2 \)
- C \( \lambda/4 \)
- D \( 2\lambda \)
Answer & Solution
Correct Answer
(C) \( \lambda/4 \)
Step-by-step Solution
Detailed explanation
For an antenna to efficiently transmit or receive a signal, its physical size must be comparable to the signal's wavelength. While a half-wave dipole \((\lambda / 2)\) is common, the minimum practical size for effective radiation is typically a quarter-wavelength (…
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