physical properties of materials - Category wise Question and Answer Practice Test with Solutions

Question : 11

Water is flowing through a horizontal pipe line having a restriction. Then

a) pressure will be greater at the restriction.

b) pressure will be the same throughout the length of the pipe.

c) pressure will be greater in the wider portion.

d) None of these

Question : 12

A and B are two wires. The radius of A is twice that of B. They are stretched by the same load. Then the stress on B is

a) four times that on A

b) equal to that on A

c) two times that on A

d) half that on A

Question : 13

The lift of an air plane is based on

a) bernoulli’s theorem

b) Torricelli’s theorem

c) law of gravitation

d) conservation of linear momentum

Question : 14 [IAS (Pre) 1995]

The clouds float in the atmosphere because of their low

a) Velocity

b) Pressure

c) Temperature

d) Density

Question : 15

Construction of submarines is based on

a) Bernoulli's theorem

b) Archimede's principle

c) Pascal's law

d) Newton's laws