Physics MCQs

Page No. 70

In vibrating cord the points where the amplitude is maximum, are called ___________________?


aantinodes


bnodes


ctroughs


dcrests


View Answer antinodes

The distance between any two consecutive crests or troughs is called____________________?


afrequency


bperiod


cWave length


dphase difference


View Answer Wave length

Waves transmit ________________ from one place to another?


aenergy


bmass


cboth


d none


View Answer energy

The range of the projectile at 30 deg and 60 deg are__________________?


aequal to 45 deg


bequal to 90 deg


cequal to each other


dnone of the above


View Answer equal to each other

The force beared by a wall on which water strikes normally at a speed of 10m/sec and at a discharge of 0.0001m3/sec is__________________?


a1 N


b10 N


c100 N


dnone


View Answer 1 N

The trajectory (or path) of a projectile is_________________?


astraight line


bparabola


chyperbola


d circle


View Answer parabola

The distance covered by a body in time t starting from rest is__________________?


aat2/2


bVt


ca2t/2


d at2


View Answer at2/2

When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?


a5m/s, 1m/s


b 3m/s, 3m/s


c6m/s, 1m/s


d4m/s, 2m/s


View Answer 5m/s, 1m/s

The thrust on the rocket in the absence of gravitational force of attraction is__________________?


aConstant


b not constant


cconstant if the rate of ejected gases is constant


dconstant for short range rocket.


View Answer Constant

Which of the following is not an example of projectile motion ?


aa gas filled ballon


bbullet fired from gun


c a football kicked


da base ball shot


View Answer a gas filled ballon

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