9th Physics Chapter 6 MCQs New Book
9th Physics Chapter 6 MCQs New Book

9th Class Physics Chapter 6 MCQs | New Book

9th Physics Chapter 6 MCQs New Book

9th Physics Chapter 6 MCQs New Book solution. Class 9th Physics Chapter 6 MCQs New Book Notes.

Tick the correct option.

6.1 A wire is stretched by a weight w. If the diameter of the wire is reduced top half of its previous value, the extension will become:

(a) one half

(b) double

(c) one fourth

(d) four times

Correct option is (d) 

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6.2 Four wires of the same material are stretched by the same load. Their dimensions are given below. Which of them will elongate most?

(a) Length  1 m, diameter 1 mm

(b) length 2m, diameter 2 mm

(c) length 3 m, diameter 3 mm

(d) length 4 m, diameter 0.5 mm

Correct option is (d) 

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6.3 Two metal plates of area 2 and 3 square meters are placed in a liquid at the same depth. The ratio of pressure on the two plates is:

(a)  1:1

(b) square root 2 : square root 3

(c) 2:3

(d) 4:9

Correct option is (a)

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6.4 The pressure at any point in a liquid is proportional to:

(a) density of the liquid

(b) depth of the point below the surface of the liquid

(c) acceleration due to gravity

(d) all of the above

Correct option is (d) 

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6.5 Pressure applied to an enclosed fluid is:

(a) increase and applied to every part of the fluid

(b) diminished and transmitted to the walls of container

(c) increase in proportional to the mass of fluid and then transmitted to each part if the fluid

(d) transmitted unchanged to every portion of the fluid and walls of contains vessel

Correct option is (d)

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6.6 The principle of a hydraulic press is based on:

(a) Hooke’s law

(b) Pascal’s law

(c) Principle of conversion of energy

(d) Principle of conversion of momentum

Correct option is (b)

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6.7 When a spring is compressed, what form of energy does it posses?

(a) Kinetic

(b) Potential

(c) Internal

(d) Heat

Correct option is (b)

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6.8 What is the force exerted by the atmosphere on a rectangular block surface of length 50 cm and breadth 40 cm? The atmospheric pressure is 100 KPa.

(a) 20 KN

(b) 100 KN

(c) 200 KN

(d) 500 KN

Correct option is (a)

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