Physics MCQs

Page No. 58

On a clear day at noon the solar energy reaching the earth is ____________________?


a1.44kw/m2


b1.4kw/m2


c1 kw/m2


dnone


View Answer 1 kw/m2

The source of tidal energy is____________________?


asun


bearth


cboth A and B


dmoon


View Answer moon

The dot product of force and velocity is__________________?


apower


bwork


cimpulse


d torque


View Answer power

The dimension of power is_______________?


a [ML2T-3]


b[ML2T-2]


c[ML2T3]


d none of these


View Answer [ML2T-3]

The work done by friction is__________________?


apositive


bnegative


czero


d none of these


View Answer negative

When arrow is released form its bow, its energy is transformed from _____________________?


aheat energy to K.E


belastic P.E to K.E


celemical energy to elastic P.E


dK.E to elastic P.E.


View Answer elastic P.E to K.E

If moon radius is 1600 km and g on its surface is 1.6 ms-2 then the escape velocity on the moon is ___________________?


a1600 ms-1


b50.6 ms-1


c 71.6 ms-1


d 2263ms-1


View Answer 50.6 ms-1

The escape velocity form the earth surface in km S-1 is____________________?


a4.2 km S-1


b 7.5 km S-1


c 9.5 km S-1


d1.1 km S-1


View Answer 1.1 km S-1

The consumption of energy by a 60 watt bulb in 2 sec is_________________?


a120 J


b 60 J


c30 J


d0.02 J


View Answer 120 J

Which of the following is not conservative force_________________?


afriction


belectric


cgravitational


dmagnetic


View Answer friction

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