Q: How much should the pressure be increased in order to
decries that volume of gas by 5% at a constant temperature?
O: (a) 3.26% (b)
5.26%
(c) 6.26% (d)
4.26%
Ans. (b) 5.26%
Q: In Melde’s experiment, a string vibrates in 3 loops when
8g were placed in the pan. What mass must be placed in the pan to make the
string vibrate in 5 loops?
O: (a) 2.88g (b)
3.88g
(c) 4.88g (c)
5.88g
Ans. (a) 2.88g
Q: Figure shows the distance-time graph of the motion of a
car. It from the graph that the car is
O: (a) at rest (b)
in uniform motion
(c) In non-uniform motion (d)
uniformly accelerated
Ans. (d) uniformly accelerated
Q: The excess of pressure inside the first soap bubble is
three times that of inside the second bubble.
The ratio of volume of the first to that of the second bubble is
O: (a) 1:3 (b)
1:9
(c) 1:27 (d)
9:1
Ans. (c) 1:27
Q: A*B=B*A, then the angle between A and B is
O: (a) π (b)
π/3
(c) π/2 (d)
π/4
Ans. (a) π
Q: Two equal vectors have a resultant equal to either of
them, then the angle between them will be
O: (a) 120 degree (b)
110 degree
(c) 60 degree (d)
150 degree
Ans. (a) 120 degree
Q: Two vectors are perpendicular, if
O: (a) A.B=1 (b)
A*B=0
(c) A.B=0 (d) A*B=AB
Ans. (c) A.B=0
Q: A body of mass m is tied to one
end of a spring and whirled round in a horizontal plane with a constant angular
velocity. The elongation in the spring 1cm. If the angular velocity is doubled,
the elongation in the string is 5cm. The original length of the spring is
O: (a) 16cm (b) 15cm
(c) 14cm (d)
13cm
Ans. (b) 15cm
Q: If a person can throw a stone to
maximum height of h meter vertically, then the maximum distance through which
it can be thrown horizontally by the same person is
O: (a) h/2 (b) h
(c) 2h (d)
3h
Ans. (c) 2h
Q: Force responsible for the
circular motion of the body is
O: (a) centripetal force (b) centrifugal force
(c) gravitational force (d) None of these
Ans. (a) centripetal force
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