NCHMCT JEE 2019 Question Paper with solutions for online practice

Question : 15 of 200

Marks: +1, -0

1000 persons are taking a dip into a cuboidal pond which is 80 m long and 50 m broad.What is the rise of water level in the pond, if the average displacement of the water by a person is

0.4m^3

10 cm
40 cm
20 cm
30 cm

Validate

Solution:

Let the rise of water level in the cuboidal pond = h m
Then,

80 × 50 × h = 1000 × 0.4

[∵V=l×b×h]

4000 × h = 400

h=1/10m[∵1m=100cm]

h=1/10×100=10cm

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