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. i d =1.2 m B Lift is accelerating vertically down with an acceleration less than the gravitational acceleration ii d 1.2 m C Lift is moving vertically up with constant speed iii d

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. i d =1.2 m B Lift is accelerating vertically down with an acceleration less than the gravitational acceleration ii d >1.2 m C Lift is moving vertically up with constant speed iii d <1.2 m constant speed. D Lift is falling freely. iv No water leaks out of the jar (A) P-(2), Q-(3), R-(2), S-(4) (B) P-(2), Q-(3), R-(1), S-(4) (C) P-(1), Q-(1), R-(1), S-(4) (D) P-(2), Q-(3), R-(1), S-(1)

Tardigrade Admin · 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 texteff =0 ∴ Liquid won't fall with respect to lift.

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

P-(2), Q-(3), R-(2), S-(4)

P-(2), Q-(3), R-(1), S-(4)

P-(1), Q-(1), R-(1), S-(4)

P-(2), Q-(3), R-(1), S-(1)

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

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