1. Tardigrade
  2. Question
  3. Physics
  4. 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

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Q. 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

JEE AdvancedJEE Advanced 2014

Solution:

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