TS EAMCET · Physics · Mechanical Properties of Solids
The lengths of four wires A, B, C and D made of same material are \(1 \mathrm{~m}, 2 \mathrm{~m}, 3 \mathrm{~m}\) and \(4 \mathrm{~m}\) respectively. The radii of the wires A, B, C and D are \(0.2 \mathrm{~mm}, 0.4 \mathrm{~mm}, 0.6 \mathrm{~mm}\) and \(0.8 \mathrm{~mm}\) respectively. For the same applied tension, the elongation is more in the wire.
- A A
- B B
- C C
- D None of these
Answer & Solution
Correct Answer
(D) None of these
Step-by-step Solution
Detailed explanation
\(Y=\frac{\frac{F}{A}}{\frac{\Delta 1}{1}}\) Elongation, \(\Delta \mathrm{l} \propto \frac{1}{\mathrm{r}^2}\) For wire A, \(\Delta \mathrm{l}=\frac{1}{\left(0.2 \times 10^{-3}\right)^2}=5 \times 10^7\) For wire B,…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- The wavelengths of two sound notes in air are \(\frac{40}{195} \mathrm{~m}\) and \(\frac{40}{193} \mathrm{~m}\). Each note produces 9 beats per second separately with a third note of fixed frequency. The velocity of sound in air in \(\mathrm{m} / \mathrm{s}\) isTS EAMCET 2011 Medium
- An object of mass \(15 \mathrm{~kg}\) is attached to the end of a metal wire of unstretched length \(1.0 \mathrm{~m}\). The object is then whirled in a vertical circle with an angular velocity of 4 \(\mathrm{rad} / \mathrm{s}\) at the bottom of the circle. If the cross sectional area of the wire is \(0.05 \mathrm{~cm}^2\) and Young's modulus of metal is \(2 \times 10^{11} \mathrm{~N} / \mathrm{m}^2\), then the elongation of the wire when the mass is at the lowest point of its path (Take \(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2\) )TS EAMCET 2022 Easy
- Which of the following statements is not correct when a junction diode is in forward bias?TS EAMCET 2008 Easy
- An ideal Carnot engine whose efficiency is \(50 \%\) receives heat at \(500 \mathrm{~K}\). If the efficiency is to be \(60 \%\), then intake temperature for the same exhaust temperature isTS EAMCET 2021 Easy
- Consider a rod of length, with a cross-sectional area of The rod supports a , platform that hangs attached to the rod's lower end. What is the elongation of the rod under the stress ignoring the weight of the rod? Consider Young's modulus to be andTS EAMCET 2021 Medium
- An alloy is composed of two radioactive materials \(A\) and \(B\) having equal weight. The half life of \(A\) and \(B\) are 10 yrs and \(20 \mathrm{yrs}\) respectively. After time \(t\), the alloy was found to consist of \(\left(\frac{1}{e}\right) \mathrm{kg}\) of \(A\) and \(1 \mathrm{~kg}\) of \(B\). . If the atomic weight of \(A\) and \(B\) are same, then the value of \(t\) is (Assume, \(\ln 2=0.7\) )TS EAMCET 2019 Medium
More PYQs from TS EAMCET
- The position of the final image formed by the given lens combination from the third lens will be at a distance of and
TS EAMCET 2020 Hard - The time period of a particle in simple harmonic motion is \(8 \mathrm{~s}\). At \(t=0\), it is at the mean position. The ratio of the distances travelled by it in the first and second seconds isTS EAMCET 2012 Medium
- An aircraft executes a horizontal loop of radius 9 km at a constant speed of \(540 \mathrm{kmh}^{-1}\). The wings of the aircraft are banked at an angle of (Acceleration due to gravity \(=10 \mathrm{~ms}^{-2}\) )TS EAMCET 2024 Easy
- Consider a light source placed at a distance of \(1.5 \mathrm{~m}\) along the axis facing the convex side of a spherical mirror of radius of curvature \(1 \mathrm{~m}\). The position \(\left(s^{\prime}\right)\), natwre and magnification (m) of the image areTS EAMCET 2017 Easy
- The emfs of three cells connected in parallel are \(E_1=5 \mathrm{~V}, E_2=8 \mathrm{~V}\) and \(E_3=10 \mathrm{~V}\) and their internal resistances are \(R_1=1 \Omega, R_2=2 \Omega\) and \(R_3=3 \Omega\), respectively. By changing \(E_3\) to \(E_{3 N}\), the equivalent emf is doubled, then \(E_{3 N}\) in \(V\) isTS EAMCET 2018 Medium
- A metal cube of side \(10 \mathrm{~cm}\) rests on a film of a liquid of thickness \(0.2 \mathrm{~mm}\). If upon applying a horizontal force \(\overrightarrow{\mathrm{F}}\) of magnitude \(0.1 \mathrm{~N}\) the cube slides with a constant speed of \(0.08 \mathrm{~m} / \mathrm{s}\), then the coefficient of viscosity isTS EAMCET 2022 Easy