1

JEE Main 2020 (Online) 3rd September Morning Slot

Numerical

+4

-0

When a long glass capillary tube of radius
0.015 cm is dipped in a liquid, the liquid rises
to a height of 15 cm within it. If the contact angle
between the liquid and glass to close to 0

(Give answer in closest integer) _____.

^{o}, the surface tension of the liquid, in milliNewton m–1, is [$$\rho $$_{(liquid)}= 900 kgm^{–3}, g = 10 ms^{–2}](Give answer in closest integer) _____.

Your input ____

2

JEE Main 2020 (Online) 2nd September Evening Slot

Numerical

+4

-0

A wire of density 9 $$ \times $$ 10

^{–3}kg cm^{–3}is stretched between two clamps 1 m apart. The resulting strain in the wire is 4.9 $$ \times $$ 10^{–4}. The lowest frequency of the transverse vibrations in the wire is : (Young’s modulus of wire Y = 9 $$ \times $$ 10^{10}Nm^{–2}), (to the nearest integer), _________Your input ____

3

JEE Main 2020 (Online) 8th January Morning Slot

Numerical

+4

-0

A one metre long (both ends open) organ pipe
is kept in a gas that has double the density of
air at STP. Assuming the speed of sound in air
at STP is 300 m/s, the frequency difference
between the fundamental and second harmonic
of this pipe is ________ Hz.

Your input ____

Questions Asked from Properties of Matter (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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