A person in a lift is holding a water jar, which has a small hole at the lower end of its side. When the lift is at rest, the water jet coming out of the hole hits the floor of the lift at a distance

Question

A person in a lift is holding a water jar, which has a small hole at the lower end of its side. When the lift is at rest, the water jet coming out of the hole hits the floor of the lift at a distance d of 1.2 m from the person. In the following, state of the lift's motion is given in List I and the distance where the water jet hits the floor of the lift is given in List II. Match the statements from List I with those in List II and select the correct answer using the code given below the lists.

	List I		List II
A.	Lift is accelerating vertically up.	$P.$	$d = 1.2 m$
B.	Lift is accelerating vertically down with an acceleration less than the gravitational acceleration.	$Q.$	$d > 1.2 m$
C.	Lift is moving vertically up with constant speed.	$R.$	$d < 1.2 m$
D.	Lift is falling freely.	$S.$	No water leaks out of the jar

Options:

Answer:

B

Solution:

In P, Q, R no horizontal velocity is imparted to falling water, so d remains same.
In S, since its free fall, $a_{e f f} = 0$
$∴$ liquid won't fall with respect to lift.

TestHub · Accepted Answer

In P, Q, R no horizontal velocity is imparted to falling water, so d remains same. In S, since its free fall, a e f f = 0 ∴ liquid won't fall with respect to lift.

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