1

JEE Main 2021 (Online) 22th July Evening Shift

Numerical

+4

-1

Out of Syllabus

In 5 minutes, a body cools from 75$$^\circ$$C to 65$$^\circ$$C at room temperature of 25$$^\circ$$C. The temperature of body at the end of next 5 minutes is _________$$^\circ$$ C.

Your input ____

2

JEE Main 2021 (Online) 18th March Evening Shift

Numerical

+4

-1

Consider a water tank as shown in the figure. It's cross-sectional area is 0.4 m

The value of v, to the nearest integer, is ___________. [Take value of g to be 10 ms

^{2}. The tank has an opening B near the bottom whose cross-section area is 1 cm^{2}. A load of 24 kg is applied on the water at the top when the height of the water level is 40 cm above the bottom, the velocity of water coming out the opening B is v ms^{-1}.The value of v, to the nearest integer, is ___________. [Take value of g to be 10 ms

^{-2}]Your input ____

3

JEE Main 2021 (Online) 18th March Morning Shift

Numerical

+4

-1

Two separate wires A and B are stretched by 2 mm and 4 mm respectively, when they are subjected to a force of 2 N. Assume that both the wires are made up of same material and the radius of wire B is 4 times that of the radius of wire A. The length of the wires A and B are in the ratio of a : b. Then a/b can be expressed as 1/x where x is _________.

Your input ____

4

JEE Main 2021 (Online) 17th March Evening Shift

Numerical

+4

-1

Suppose you have taken a dilute solution of oleic acid in such a way that its concentration becomes 0.01 cm

^{3}of oleic acid per cm^{3}of the solution. Then you make a thin film of this solution (monomolecular thickness) of area 4 cm^{2}by considering 100 spherical drops of radius $${\left( {{3 \over {40\pi }}} \right)^{{1 \over 3}}} \times {10^{ - 3}}$$ cm. Then the thickness of oleic acid layer will be x $$\times$$ 10^{$$-$$14}m. Where x is ____________.Your input ____

Questions Asked from Properties of Matter (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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