1

JEE Main 2021 (Online) 25th February Morning Shift

Numerical

+4

-1

The potential energy (U) of a diatomic molecule is a function dependent on r (interatomic distance) as

$$U = {\alpha \over {{r^{10}}}} - {\beta \over {{r^5}}} - 3$$

where, $$\alpha$$ and $$\beta$$ are positive constants. The equilibrium distance between two atoms will be $${\left( {{{2\alpha } \over \beta }} \right)^{{a \over b}}}$$, where a = ___________.

$$U = {\alpha \over {{r^{10}}}} - {\beta \over {{r^5}}} - 3$$

where, $$\alpha$$ and $$\beta$$ are positive constants. The equilibrium distance between two atoms will be $${\left( {{{2\alpha } \over \beta }} \right)^{{a \over b}}}$$, where a = ___________.

Your input ____

2

JEE Main 2020 (Online) 5th September Evening Slot

Numerical

+4

-0

A body of mass 2 kg is driven by an engine
delivering a constant power of 1 J/s. The body
starts from rest and moves in a straight line.
After 9 seconds, the body has moved a
distance (in m) _______.

Your input ____

3

JEE Main 2020 (Online) 3rd September Evening Slot

Numerical

+4

-0

A block starts moving up an inclined plane of inclination 30

^{o}with an initial velocity of v_{0}. It comes back to its initial position with velocity $${{{v_0}} \over 2}$$. The value of the coefficient of kinetic friction between the block and the inclined plane is close to $${I \over {1000}}$$. The nearest integer to I is____.Your input ____

4

JEE Main 2020 (Online) 3rd September Morning Slot

Numerical

+4

-0

A cricket ball of mass 0.15 kg is thrown
vertically up by a bowling machine so that it
rises to a maximum height of 20 m after leaving
the machine. If the part pushing the ball applies
a constant force F on the ball and moves
horizontally a distance of 0.2 m while launching
the ball, the value of F (in N) is (g = 10 ms

^{–2}) ____.Your input ____

Questions Asked from Work Power & Energy (Numerical)

Number in Brackets after Paper Indicates No. of Questions

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