AIEEE. Physics- WORK, POWER AND ENERGY. Online Test

A body of mass 1kg is thrown vertically upwards with initial KE of 98J. The hieght at which it is reduced to half will be


A spring is streched by 2cm, it's potential energy is U. If the spring is streched by 10cm its potential energy is


An electric motor pumps 75 litres of water pre second to a hieght of 5m. If it consumes a power of 5 kw, its efficiency is


1. If the linear momemtum of the body is increased by 50% the KE will be increased by


A chain of mass m is placed on a smooth table with 1/7th part of its length l hanging over the edge. The workdone in pulling the chain back to the surface of the table is


If the length of the barrel of a rifle is cut by 5cm, the speed of the bullet reduces from 21m/s to 19m/s. if the mass of the bullet is 50gm, then the force acting on the bullet is


A ball falling freely from a hieght of 4.9m strikes a horizontal plane. If the coefficient of restitution is 3/4, the ball will strike the plane again after


A body of mass 5kg strikes another body of mass 2.5kg initially at rest. The bodies after collision coalesce and begin to move as a whole with a kinetic energy of 5J. The KE of the first body before collision is


What power a sprinter must develop from the start if has to impart his body (m=65kg) a speed of 9m/s in 3s


An electric motor winds a cable of tension 4500N at the rate of 2 m/s. Its power is












Discussion

sunny

easy one

4009 days 18 hours 27 minutes ago

sunny

easy one

4009 days 18 hours 27 minutes ago

Varun Sharma

it has helped me

4039 days 22 hours ago

Pranav

low quality questions except 6th question

4298 days 22 hours 7 minutes ago

Vidhi

it's very nice

4332 days 9 hours 37 minutes ago

sanjeev

NOT SO DIFFICULT

4346 days 5 hours 10 minutes ago

aveekumar

its cool

4346 days 10 hours 8 minutes ago

rachapudisairam

very good one pplease add all the
chapters

4354 days 22 hours 34 minutes ago

Alfred Maxwell
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