A Work, Energy and Power JEE mock test on Goodmarks lets you attempt 80+ timed MCQs with instant feedback. Use it to benchmark speed, accuracy, and readiness for JEE Main Physics.
Simulate exam conditions with a Work, Energy and Power mock test. Attempt 80+ timed MCQs, check your score instantly, and review every solution to close gaps before the real exam.
A cricket ball of mass 150g moving with a speed of 126km/h hits at the
middle of the bat, held firmly at its position by the batsman. The ball moves straight back to the bowler after hitting the bat. Assuming that collision between ball and bat is completely elastic and the two remain in constant
for 0.001s, the force that the batsman
had to apply to hold the bat firmly at its place would be:
Q2PhysicsUnit 4: Work, Energy and Power
Which one of the following statement is
false?
Q3PhysicsUnit 4: Work, Energy and Power
A body of mass 5 kg has momentum of
10kgm/sec. When a force of 0.2N is
applied on it for 10 sec, the change in its kinetic energy is:
Q4PhysicsUnit 4: Work, Energy and Power
The graph between the resistive force
acting on a body and the position of
the body travelling in a straight line is
shown in the figure. The mass of the
body is 25kg and initial velocity is 2 m/s.When the distance covered by the
bodyi s4m, its kinetic energy would be
Q5PhysicsUnit 4: Work, Energy and Power
A3kg object has initial velocity (6i^−2j^)m/s. The total work done on the
object if its velocity changes to (8i^+4j^)m/s is :
Q6PhysicsUnit 4: Work, Energy and Power
A wire suspended vertically from one of its ends is stretched by attaching a weight of 200N to the lower end. The weight stretches the wire by 1 mm. Then the energy stored in the wire is
Q7PhysicsUnit 4: Work, Energy and Power
Potential energy is classified into which
two energy?
Q8PhysicsUnit 4: Work, Energy and Power
Which of the following forms of energy
is released or absorbed in most
chemical reactions?
Q9PhysicsUnit 4: Work, Energy and Power
A boy throws a ball of mass 0.5kg upwards with an initial speed of 14m/s The ball reaches a maximum height of
8m. The amount of energy dissipated by air drag acting on the ball during the ascent is
Q10PhysicsUnit 4: Work, Energy and Power
A bullet is fired at a target with a velocity 80m/s and penetrates 50cm into it. If this bullet were fired into a
target 25cm thick with equal velocity, with what velocity would it emerge, supposing the resistance to be uniform
and the same in both the cases?
Q11PhysicsUnit 4: Work, Energy and Power
Assertion
(A) : The value of coefficient
of restitution is independent of the masses and velocities of the colliding bodies but depends on their materials. Reason (R) : Coefficient of restitution is
the ratio of the relative velocity of separation or the relative velocity of approach
Q12PhysicsUnit 4: Work, Energy and Power
Water jet is coming out of a hose pipe of diameter 20cm with speed 20cm/sec
It strike a man inelastically. Find the force exerted by water jet on the person.
Q13PhysicsUnit 4: Work, Energy and Power
A ball falls freely under gravity from rest. Name the kind of energy it will possess at the point from where it falls:
Q14PhysicsUnit 4: Work, Energy and Power
Identify the energy changes in the following two cases -
A:A car moving up a hill
B : Photographic film is exposed to sun-
light
Q15PhysicsUnit 4: Work, Energy and Power
The potential energy of a system
increases if work is done:
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