A. PQ
B. QR
C. RS
D. QS
Correct Answer: Option B
B. QR
Explanation
The height of the mercury column in a simple barometer is calculated as the atmospheric pressure.
A. PQ
B. QR
C. RS
D. QS
Correct Answer: Option B
B. QR
Explanation
The height of the mercury column in a simple barometer is calculated as the atmospheric pressure.
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