Properties Of Solids And Liquids Question 292
Question: A barometer kept in a stationary elevator reads 76 cm. If the elevator starts accelerating up the reading will be
Options:
A)Zero
B)Equal to 76 cm
C)More than 76 cm
D)Less than 76 cm
Show Answer
Answer:
Correct Answer: D
Solution:
$ h=\frac{P}{\rho g} $ $ h\propto \frac{1}{g} $ .
If lift moves upward with some acceleration then effective g increases.
So the value of h decreases i.e. reading will be less than 76 cm.
