Physics MCQs

Page No. 56

Biomass can be converted into fuels by____________________?


adirect combustion

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bfermentation

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cboth A and B

✓


dnone of these

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View Answer both A and B

________________ cells converts solar energy into electrical energy?


a rotory

✖


bphotovoltaic

✓


cgalvanic

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dnon of these

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View Answer photovoltaic

Geothermal energy is a _______________________ source of energy?


anon-renewable

✖


bstable

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crenewable

✓


dnone of the above

✖


View Answer renewable

Propulsion force of a rocket is____________________?


anon-conservative force

✓


bconservative force

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c both A and B

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dnone of these

✖



The area under the force displacement graph represents__________________?


a area

✖


bwork done

✓


cpower

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dnone of these

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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

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bchild does more work than man

✓


cboth do the same amount of work

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d it is a foolish question

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When two protons are brought together_____________________?


aKinetic energy increases

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bP.E. between them increases

✓


c P.E. between them decreases

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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

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b V esc = -2 Vo

✓


cV esc = Vo

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d V esc = 2Vo

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View Answer V esc = -2 Vo

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


atorque

✓


bangular momentum

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clinear momentum

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d power

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View Answer torque

One mega watt hour is equal to_________________?


a36 x 106 J

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b. 36 x 1012 J

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c36 x 109 J

✖


d36 x 108 J

✓


View Answer 36 x 108 J

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