9th Physics Chapter 6 Constructed response questions
9th Physics Chapter 6 Constructed response questions. We will answer only revised smart syllabus for class 9th physics.
6.1 A spring having spring constant k hangs vertically from a fixed point. A load of weight l, when hung from the spring, causes an extension x, the elastic limit of the spring is not exceeded.
Some identical springs, each with spring constant k, are arranged as shown below:
For each arrangement, complete the table by determining:
(i) the total extension in terms of x.
(ii) the spring constant in terms of k.
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6.2 Springs are made of steel instead of iron. Why?
Main reason is the higher elastic limit of steel. Steel allows the spring to stretch or compress under the force and return to its original shape with permanent deformation.
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6.3 Which of the following material is more elastic?
(a) Iron of robber
(b) Air of water
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6.4 How does water pressure one metre below the surface of a swimming pool compare to water pressure one metre below the surface of a very large and deep lake?
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6.5 What will happen to the pressure in all parts of a confined liquid if pressure is increased in one part? Give an example from your daily life where such principle is applied.
If pressure is increased in one part of a confined liquid, it will be distributed equally in all the parts of the liquid due to Pascal’s law. A hydraulic car lift is the best example of Pascal’s law. When we apply small force on a piston, the pressure is transmitted through the hydraulic fluid, allowing a larger piston to lift a heavy car
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6.6 If some air remains trapped within the top of the mercury column of the barometer which is supposed to be vacuum, how would it effect the height of the mercury column?
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6.7 How does the long neck is not a problem to a giraffe while raising its neck suddenly?
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6.8 The end of glass tube used in a simple barometer is not properly sealed, some leak is present. What will be its effect?
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6.9 Comment on the statement, “Density is a property of a material not the property of an object made of that material.”
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6.10 How the load of a large structure is estimated by an engineer?
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Some important links are given below
