If a clock based on oscillating pendulum is taken from the earth to moon, it will _____.
Important Questions on Physics
Consider the following statements:
I. In summer season, the effective length of the pendulum clock is lengthened (increased length), so its time period is also increased and consequently the clock becomes slow.
II. In winter season, the effective length is contracted, thus time period is decreased and the clock becomes fast.
Which of the statement(s) given above is/are correct?
The displacement -time graph given above approximately represents the motion of a,
Consider the following statements:
I. A heat engine is a device which converts heat energy into mechanical energy.
II. A heat engine essentially consists of source of heat at higher temperature, working substance and sink of heat at lower temperature.
III. In a diesel engine, a mixture of fuel vapours and air acts as the working substance.
IV. Efficiency of a petrol engine is greater than diesel engine.
Which of the statements given above are correct?
