9th Class Physics English Medium Online Test For Full Book With Answers

9th Class Physics English Medium Online Test For Full Book

Sr. # Questions Answers Choice
1 A mass of 2 kg is hung by spring which displaces it through 5 cm. the spring constnat. 4000 N/m 400 N/m 40 N/m 4 N/m
2 Hook's law hodl good up to Plastic Elastic Yield limit Proportinal unit
3 The most elastic material of the following is. Rubber Steel Wood Glass
4 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 k Pa. 20 kN 200 kN 100 kN 500 kN
5 When a spring in compressed, what form of energy does it possess. Heat Internal Potential Kinetic
6 The principle of ahydrulic press is based on. Pascal's law Hooke's Law Principle of conseration of energy Principle of conservatin of momentum
7 Pressure applied to an enclosed fluid is. Increases and applied to every part of the fluid Transmitted unchanged to every portion of the fluid and walls of containing vessel Increased and transmitted to the walls of container Diminshed and transmitted to walls of cntainer
8 The pressrue at any point in a liquid is proportional to. Density of liquid Depth of the point below the surface of the liquid Acceleration due to gravity All of the above
9 Four wires of the same material are stretch by the same load. Their dimensions are give below. Which of them will elongate most. Length 4 m, diameter 0.5 mm Length 1 m, diameter 1 mm Length 2 m, diameter 2 mm Legnth 3 m, diameter 3 mm
10 A wire is stretched by a weight w. If the diameter of the wire is reduce dto half of its previous value, the extension will become Four times Double One fourth One half
11 A force is acting on body but causes no displacemtn. The work done on the body is Negative Zero Positive Infinite
12 A Partical enegine cannot have an efficiency equal to. 0 1 0.8 0.5
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