MEDIUM
JEE Main
IMPORTANT
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All the graphs below are intended to represent the same motion. One of them does it incorrectly. Pick it up.
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Important Questions on Engineering Entrance Solved Papers 2018 JEE Main & Advanced/BITSAT/KCET/Andhra Pradesh & Telangana (EAMCET)/VIT/MHT CET
EASY
JEE Main
IMPORTANT
A particle is moving in a circular path of radius under the action of attractive potential energy . Its total energy is
MEDIUM
JEE Main
IMPORTANT
A reservoir is at and Carnot's engine takes a thousand kilocalories of heat from it and exhausts it to a sink at . What is the amount of work and the efficiency of the engine?
MEDIUM
JEE Main
IMPORTANT
A train moves towards stationary observer with speed . The train blows whistle and its frequency is registered by the observer as . If the train's speed is reduced to , the frequency registered is . If the speed of sound is , then the ratio is,
HARD
JEE Main
IMPORTANT
An object of mass is projected with a velocity at an angle to the horizontal. At the highest point of its path, the projectile explodes and breaks up into two fragments of masses and . The fragments separate horizontally after the explosion, which releases internal energy such that the kinetic energy of the system at the highest point is doubled. The separation between the two fragments when they reach the ground is,
MEDIUM
JEE Main
IMPORTANT
A block of wood floats in water with of its volume submerged. If the same block just floats in a liquid, the density of liquid in is,
MEDIUM
JEE Main
IMPORTANT
In Young's double slit experiment, intensity at a point is of the maximum intensity. Angular position of this point is,
EASY
JEE Main
IMPORTANT
Consider the acceleration, velocity and displacement of a tennis ball as its falls to the ground and bounces back. Directions of which of these change in the process?
MEDIUM
JEE Main
IMPORTANT
If the time period is doubled, then the angular momentum of the body will (provided the moment of inertia of the body is constant),
