Force
and pressure:-
1.The
most characteristic property of liquid is
(a)
elasticity (b) fluidity
(b)
formlessness (d) volume
conservation
2.A steel
ball is floating in a touch of mercury. If we fill the empty part of the trough
with water, what, what will happen to steel ball?
(a) It
will continue in its position
(b) It
will move up
(c) It
will move down
(d) It
will execute vertical oscillations
3.The
maximum pressure in the bottle filled with water is maximum
(a) in
the middle the of the bottle
(b) at
the top the bottle
(c) first
at top then in the middle
(d) in
the bottom of the bottle
4.The
bottom of dam is made thick due to
( a) the
water exert low pressure
(b) it is
a custom
(c) it
look beautiful
(d) the
water exert more pressure on bottom wall
5.The
pressure on earth will be less the man
is
(a) lying
(b)
sitting
(c)
standing by one foot
(d)
standing by two feet
6.What will be pressure when 30N force is
applied on 120 cm2 area ?
(a)
2.5*103N/m2
(b) 5*104N/m2
(c)2.5*102N/m2
(d) 5*103N/m2
7. A body
has weight 50N in air. After immersing completely in liquid its weight is 20 N.
Then, the buoyant force on the body will be
(a) 30 N
(b) 70 N
(c)2.5 N
(d) None
of these
8.In a
glass of water the ice piece is floating such that the some part of ice is above the water .If the ice
melt completely ,then level of water
(a) will
remain same
(b) will
increase
(c) can
increase or decrease
(d)will
decrease
9.Water
,mercury and sprit are filled in some pots one by one .In which of following
pots pressure will be maximum of the pots?
(a)
mercury pot
(b) sprit
pot
(c) water
pot
(d) None
of these
10.The
weight of body in water is 8N which displace 2.5 N water , then weight of the
body in air is
(a) 10.5 N
(b) 6.5 N
(c) 8 N9a
(d)none
of these
Answer
1(d) 2(b) 3(d) 4(d) 5(a) 6(a) 7(a) 8(a) 9(a) 10(a)
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