AP EAPCET 2025 - 22nd May Evening Shift | Elasticity Question 8 | Physics

When a wire made of material with Young's modulus $\gamma$ is subjected to a stress $S$, the elastic potential energy per unit volume stored in the wire is

$\frac{Y S}{2}$

$\frac{S^2 Y}{2}$

$\frac{S^2}{2 Y}$

$\frac{S}{2 Y}$

AP EAPCET 2025 - 22nd May Morning Shift

MCQ (Single Correct Answer)

-0

The force required to stretch a steel wire of area of cross-section $1 \mathrm{~mm}^2$ to double its length is

(Young's modulus of steel $=2 \times 10^{11} \mathrm{~N}-\mathrm{m}^{-2}$ )

$2 \times 10^3 \mathrm{~N}$

$2 \times 10^5 \mathrm{~N}$

$2 \times 10^2 \mathrm{~N}$

$2 \times 10^4 \mathrm{~N}$

AP EAPCET 2025 - 21st May Evening Shift

MCQ (Single Correct Answer)

-0

When a wire of length ' $L$ ' clamped at one end is pulled by a force ' $F$ ' from the other end, its length increases by ' $L$ '. If the radius of the wire and the applied force were halved, then the increase in its length is

$3 L$

$4 L$

1.5 L

$2 L$

AP EAPCET 2025 - 21st May Evening Shift

MCQ (Single Correct Answer)

-0

When a sphere is taken to the bottom of a sea of depth 1 km , it contracts in volume by $0.01 \%$, then the Bulk modulus of the material of the sphere is

(Acceleration due to gravity $=10 \mathrm{~ms}^{-2}$ )

$10 \times 10^6 \mathrm{~N}-\mathrm{m}^{-2}$

$1.2 \times 10^{10} \mathrm{~N}-\mathrm{m}^{-2}$

$10 \times 10^{10} \mathrm{~N}-\mathrm{m}^{-2}$

$10 \times 10^{11} \mathrm{~N}-\mathrm{m}^{-2}$

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