Physics MCQs

Page No. 57

When the speed of a moving body is doubled then___________________?


aits K.E is doubled


bits acceleration is doubled


cits P.E is doubled


dits momentum is doubled



Gravitational P.E of a body has____________________?


ano formula


ba formula mgh only


ca formula


dno general formula


View Answer no general formula

The highest value of escape velocity in solar system is planet____________________?


aEarth


bNeptune


cJupiter


dMoon


View Answer Jupiter

The tides raise the mater in the see roughly in a day___________________?


aonce


btwice


c four time


deight time


View Answer twice

Work done on the body equals to the _____________________?


achange in its K.E always


bchange in its P.E always


cchange in its K.E and change in its P.E


dneither change in K.E and nor change in its P.E



Slope of work time graph is equal to____________________?


adisplacement


bacceleration


cpower


d energy


View Answer power

The relation between horse power and watt is_________________?


a1 hp = 546 watts


b1 hp = 746 watts


c1 hp = 1000 watts


d1 hp = 946 watts


View Answer 1 hp = 746 watts

An elevator weighing 3.5 x 10-6 N is raised to a height of 1000 m in the absence of friction, the work done is_________________?


a3.5 x 103 J


b3.5 x 104 J


c3.5 x 106 J


d3.5 x 109 J


View Answer 3.5 x 109 J

Which of the following types of force can do no work on the particle on which it acts ?


africtional force


bgravitational force


c elastic force


dcentripetal force


View Answer centripetal force

A field in which the work done in a moving a body along closed path is zero is called________________?


aelectric field


bconservative field


celectromagnetic field


dgravitational field


View Answer conservative field

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