set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Consider the figure of a fountain with four holes, given below.Which one of the holes in the fountain will throw the water farthest?

a) 3

b) 2

c) 4

d) 1

Question : 2

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 : 3

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 : 4

Two pieces of metal when immersed in a liquid have equal upthrust on them; then

a) both pieces must have equal densities

b) both pieces must have equal weights

c) both pieces must have equal volumes

d) both are floating to the same depth

Question : 5

The rain drops are spherical because

a) The air has resistance

b) The water has surface tension

c) They fall from big height

d) None of the above

Question : 6

Which of the following elements was first produced artificially?

a) Plutonium

b) Francium

c) Neptunium

d) Technetium