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11th Tamil Nadu Board
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As temperature increases the Young's modulus of the material of a wire :

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Important Questions on Properties of Matter

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11th Tamil Nadu Board
IMPORTANT
Physics Standard 11 Vol II>Chapter 7 - Properties of Matter>EVALUATION>Q I
Copper of fixed volume 'V' is drawn into wire of length 'l'. When this wire is subjected to a constant force 'F', the extension produced in the wire is ∆l. If Y is young's modulus then which of the following graph is a straight line?
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11th Tamil Nadu Board
IMPORTANT
Physics Standard 11 Vol II>Chapter 7 - Properties of Matter>EVALUATION>Q I
A certain number of spherical drops of a liquid of radius 'r' coalesce to form a single drop of radius 'R' and volume 'V'. If 'T' is the surface tension of the liquid then:
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11th Tamil Nadu Board
IMPORTANT
Physics Standard 11 Vol II>Chapter 7 - Properties of Matter>EVALUATION>Q I
The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?
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11th Tamil Nadu Board
IMPORTANT
Physics Standard 11 Vol II>Chapter 7 - Properties of Matter>EVALUATION>Q I
The wettability of a surface by a liquid depends primarily on:
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11th Tamil Nadu Board
IMPORTANT
Physics Standard 11 Vol II>Chapter 7 - Properties of Matter>EVALUATION>Q I
In a horizontal pipe of non-uniform cross-section, water flows with a velocity of 1 ms−1 at a point where the diameter of the pipe is 20cm. The velocity of water in (ms−1) at a point where the diameter of the pipe is 5cm is:
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11th Tamil Nadu Board
IMPORTANT
Physics Standard 11 Vol II>Chapter 7 - Properties of Matter>EVALUATION>Q II
Define stress and strain.
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11th Tamil Nadu Board
IMPORTANT
Physics Standard 11 Vol II>Chapter 7 - Properties of Matter>EVALUATION>Q II
State Hooke’s law of elasticity.
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11th Tamil Nadu Board
IMPORTANT
Physics Standard 11 Vol II>Chapter 7 - Properties of Matter>EVALUATION>Q II
Define Poisson’s ratio.