Physics MCQs

Page No. 56

Biomass can be converted into fuels by____________________?


adirect combustion


bfermentation


cboth A and B


dnone of these


View Answer both A and B

________________ cells converts solar energy into electrical energy?


a rotory


bphotovoltaic


cgalvanic


dnon of these


View Answer photovoltaic

Geothermal energy is a _______________________ source of energy?


anon-renewable


bstable


crenewable


dnone of the above


View Answer renewable

Propulsion force of a rocket is____________________?


anon-conservative force


bconservative force


c both A and B


dnone of these



The area under the force displacement graph represents__________________?


a area


bwork done


cpower


dnone of these


View Answer work done

A man lifts vertically a weight of 40kg through 1m in 10s; while a chile lifts vertically a weight of 10kg through a distance of 1m in 1s. What will be correct inference ?


aman does more work than child


bchild does more work than man


cboth do the same amount of work


d it is a foolish question



When two protons are brought together_____________________?


aKinetic energy increases


bP.E. between them increases


c P.E. between them decreases


dP.E. between tem does not change



The relation between the escape velocity V esc and orbital speed Vo is given by________________?


aV esc = 1/2Vo


b V esc = -2 Vo


cV esc = Vo


d V esc = 2Vo


View Answer V esc = -2 Vo

Work has the dimension as that of same as that of__________________?


atorque


bangular momentum


clinear momentum


d power


View Answer torque

One mega watt hour is equal to_________________?


a36 x 106 J


b. 36 x 1012 J


c36 x 109 J


d36 x 108 J


View Answer 36 x 108 J

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