61.
Property of a liquid by which it can oppose a relative motion between its
different layers is known as --- Viscosity
62.
Fat can be separated from milk in a cream separate because of – centrifugal
force
63. When a camel hair brush is dipped in water
, its hair gets separated but when it is removed from water the hairs are found
to be drawn together, this is because of – surface tension.
64.
Electron revolve round the nucleus because of --- centripetal force
65.
In a plane two forces of 14 & 16 Newton are acting on an object to produce
a resultant force of 2 Newton – the orientation of the forces with respect to
each other 2700
66.
While running over a horizontal level road , the man holds the umbrella in the
vertical direction . if the stops , then in order to protect himself from the
rain he should hold it --- inclined to the back
67.
A car and a lorry both are moving with equal kinetic energies. If equal
breaking force is applied on both then before coming to rest – both will cover
the same distance
68.
A projectile is thrown horizontally from the top of a tower 100 m high. Neglecting
the air resistance the path traced by the projectile will be a --- Parabola
69.
The center of gravity of a body --- it changes its position from time to time
70.
The acceleration of a body moving in a circular path at uniform speed is
---directed towards the center
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