# The force constant of a wire does not depend on (1) Nature of the material                      (2) Radius of the wire (3) Length of the wire                            (4) None of the above

Subtopic:  Young's modulus |
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

The length of a wire is 1.0 m and the area of cross-section is $1.0×{10}^{-2}c{m}^{2}$. If the work done for increase in length by 0.2 cm is 0.4 joule, then Young's modulus of the material of the wire is

(1) $2.0×{10}^{10}N/{m}^{2}$

(2) $4×{10}^{10}N/{m}^{2}$

(3) $2.0×{10}^{11}N/{m}^{2}$

(4) $2×{10}^{10}N/{m}^{2}$

Subtopic:  Potential energy of wire |
59%
From NCERT
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The quality of the material which opposes the change in shape, volume or length is called

(1)   Intermolecular repulsion

(2)   Intermolecular behaviour

(3)   Viscosity

(4)   Elasticity

Subtopic:  Elasticity |
80%
From NCERT
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A wire of length L and radius r is  rigidly fixed at one end. On stretching the other end of the wire with a force F, the increase in its length is l. If another wire of same material but of length 2L and radius 2r is stretched with a force of 2F, the increase in its length will be

(a) l                                       (b) 2l

(c) $\frac{l}{2}$                                    (d) $\frac{l}{4}$

Subtopic:  Hooke's Law |
77%
From NCERT
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In steel, the Young's modulus and the strain at the breaking point are $2×{10}^{11}N{m}^{-2}$ and 0.15 respectively. The stress at the breaking point for steel is therefore -

(1) $1.33×{10}^{11}N{m}^{-2}$

(2) $1.33×{10}^{12}N{m}^{-2}$

(3) $7.5×{10}^{-13}N{m}^{-2}$

(4) $3×{10}^{10}N{m}^{-2}$

Subtopic:  Young's modulus |
82%
From NCERT
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Which one of the following substances possesses the highest elasticity:

(1) Rubber

(2) Glass

(3) Steel

(4) Copper

Subtopic:  Elasticity |
76%
From NCERT
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Which one of the following quantities does not have the unit of force per unit area?

1. Stress

2. Strain

3. Young's modulus of elasticity

4. Pressure

Subtopic:  Stress - Strain |
85%
From NCERT
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A copper wire and a steel wire of the same diameter and length are connected end to end and a force is applied, which stretches their combined length by 1 cm. The two wires will have

(1)   Different stresses and strains

(2)   The same stress and strain

(3)   The same strain but different stresses

(4)   The same stress but different strains

Subtopic:  Young's modulus |
56%
From NCERT
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The possible value of Poisson's ratio is

(1) 1

(2) 0.9

(3) 0.8

(4) 0.4

Subtopic:  Poisson's Ratio |
66%
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Which of the following affects the elasticity of a substance

1. Hammering and annealing

2. Change in temperature

3. Impurity in substance

4. All of these

Subtopic:  Elasticity |
89%
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