If a bucket containing water is kept revolving at a high speed in a vertical circle, the water does not spill. It gets
Centripetal force
Magnetic force
Gravitational force
None of these
A car which travels through the road with different velocities in equal intervals of time is said to have
Uniform acceleration
Nonuniform acceleration
Retardation
Uniform motion
m / s2 is the unit of :
speed
acceleration
displacement
time
What type of motion is the motion of tip of seconds hand of a watch?
Accelerated motion
Non uniform motion
Hertz is the unit of
Frequency
Wavelength
Amplitude
Displacement
The sound produced by musical instruments in big halls may linger even after the instrument stops producing sound. This is known as
Resonance
Pitch
Echo
Reverberation
S.I unit of momentum is
kg m/s2
kg m/s
kgm-1s-1
kgs
Which force has the following situation such as motor cyclist revolving in a circus globe?
Electrical force
Velocity of sound is
380 m/s
340 m/s
3x108 m/s
360 m/s
The distances travelled by a body falling freely from rest in the first ,second and third seconds respectively are in the ratio:
1 : 4 : 9
1 : 2 : 3
1 : 9 : 25
1 : 3 : 5
