CUET · PHYSICS · PYQ PAPER 2023
Two antennas A and B have maximum line of sight range R = 45.5 km. If the height of antenna A is 32 m then the height of antenna B is : (Given radius of earth is = 6400 km)
- A 25 m
- B 100 m
- C 50 m
- D 75 m
Answer & Solution
Correct Answer
(C) 50 m
Step-by-step Solution
Detailed explanation
\(R = \sqrt{2h_AR_e} + \sqrt{2h_BR_e}\) \(h_B = \frac{(R - \sqrt{2h_AR_e})^2}{2R_e}\) \(h_B = \frac{(45.5 \text{ km} - \sqrt{2 \times 0.032 \text{ km} \times 6400 \text{ km}})^2}{2 \times 6400 \text{ km}}\)…
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