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Physics 9 Chapter 7 - Properties of Matter - 16
1.
In which of the following machines, Pascal’s law is applied?
a) Hydraulic press
b) Automobiles
c) Hydraulic machines
d) All of these
2.
Which of the following law is applied in hydraulic press?
a) Newton’s law
b) Ohm’s law
c) Joule’s law
d) ascal’s law
3.
On which principle, hydraulic press works?
a) Joule’s law
b) Pascal’s law
c) Principle of floatation
d) Ohm’s law
4.
Which of the following law is applied in hydraulic excavator?
a) ascal’s law
b) Newton’s law
c) Ohm’s law
d) Joule’s law
5.
What are hydraulic systems called that works on the principle of Pascal’s law?
a) orce multipliers
b) Pressure divider
c) Pressure multipliers
d) Force divider
6.
On which principle, braking systems of buses work?
a) Joule’s law
b) Ohm’s law
c) Principle of floatation
d) Pascal’s law
7.
In a hydraulic press, a force of 100 N is applied on the piston of a pump of cross-sectional area 0.01 m
2
. Find the force that compresses a cotton bale placed on larger piston of cross-sectional area 1 m
2
?
a) 1000 N
b) 0.01 N
c) 10,000 N
d) 0.1 N
8.
On which principle, braking systems of cars work?
a) Principle of floatation
b) Joule’s law
c) Pascal’s law
d) Ohm’s law
9.
Which force between the brake pads and the brake drums stops the wheels?
a) Gravitational force
b) None of these
c) Force of gravity
d) Force of friction
10.
How many cylinders are present in hydraulic press?
a) Three
b) One
c) Four
d) Two
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