TS EAMCET · Physics · Mechanical Properties of Solids
Two metal wires \(A\) and \(B\) have length \(L\) and \(3 L\) respectively. The radius of cross-sectional circular area of wire \(A\) and \(B\) are \(R\) and \(2 R\), respectively. These wires are joined end to end along their axis. When one end of the combined system is fixed and other end is pulled with a constant force \(F\), the elongation in both the wires is equal. If \(Y_A\) and \(Y_B\) are Young's modulus of wire \(A\) and \(B\), then the \(Y_B / Y_A\) is
- A \(\frac{3}{4}\)
- B \(\frac{4}{3}\)
- C \(\frac{2}{3}\)
- D \(\frac{3}{2}\)
Answer & Solution
Correct Answer
(A) \(\frac{3}{4}\)
Step-by-step Solution
Detailed explanation
For metal wire \(A, L_A=L, R_A=R\) For metal wire \(B, L_B=3 L, R_B=2 R\) When the ends of the of metal wire \(A\) and \(B\) are joined and pulled with a constant force \(F\) after fixing the one end of combined system, then change in length of wire \(A\) and \(B\) is same.…
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
- If the peak value of the magnetic field of an electromagnetic wave is \(30 \times 10^{-9} \mathrm{~T}\), then the peak value of the electric. field isTS EAMCET 2024 Easy
- For a system to follow the law of conservation of linear momentum during a collision, the condition is : (1) total external force acting on the system is zero. (2) total external force acting on the system is finite and time of collision is negligible. (3) total internal force acting on the system is zero.TS EAMCET 2006 Medium
- The current gain of a transistor is 0.98 . If the transistor is used in a common emitter arrangement what would be the change in collector current corresponding to a change of \(0.5 \mathrm{~mA}\) in the base current?TS EAMCET 2020 Hard
- A current flows along a thin wire shaped as shown in figure. The radius of curved part of the wire is equal to , the angle . The magnitude of magnetic field at the point is approximately
TS EAMCET 2022 Medium - The displacement current through the plates of a parallel plate capacitor of capacitance \(30 \mu \mathrm{F}\) is \(150 \mu \mathrm{A}\). The capacitor is charged by a source of varying potential at the rate ofTS EAMCET 2023 Hard
- In a photoelectric experiment three different lights are incident on a metal of work function \(1.5 \mathrm{eV}\). Light \(A\) is \(200 \mathrm{~nm}\) wavelength with intensity \(1.8 \mathrm{~W} / \mathrm{m}^2\), light \(B\) is \(400 \mathrm{~nm}\) with \(1 \mathrm{~W} / \mathrm{m}^2\) and light \(C\) is \(600 \mathrm{~nm}\) with \(0.5 \mathrm{~W} / \mathrm{m}^2\). The current versus voltage is measured. Which graphs correspond to which light?
TS EAMCET 2021 Easy
More PYQs from TS EAMCET
- A solid sphere of radius makes a perfect rolling down on a plane which is inclined to the horizontal axis at an angle . If the radius of gyration is , then its acceleration isTS EAMCET 2018 Hard
- A \(p\) - \(n\) junction diode can withstand upto \(20 \mathrm{~mA}\) current under forward bias. The diode has a potential difference of \(0.5 \mathrm{~V}\) across it, which is assumed to be independent of current. What is the maximum voltage of the battery used to forward bias the diode when a resistance of \(125 \Omega\) is connected in series with it?TS EAMCET 2020 Medium
- Two strings \(A\) and \(B\) of lengths, \(L_A=80 \mathrm{~cm}\) and \(L_B=x \mathrm{~cm}\) respectively are used separately in a sonometer. The ratio of their densities \(\left(d_A / d_B\right)\) is 0.81 . The diameter of \(B\) is one-half that of \(A\). If the strings have the same tension and fundamental frequency the value of \(x\) is :TS EAMCET 2006 Medium
- 'A horizontal uniform glass tube of \(100 \mathrm{~cm}\), length sealed at both ends contains \(10 \mathrm{~cm}\) mercury column in the middle. The temperature and pressure of air on either side of mercury column are respectively \(31^{\circ} \mathrm{C}\) and \(76 \mathrm{~cm}\) of mercury. If the air column at one end is kept at \(0^{\circ} \mathrm{C}\) and the other end at \(273^{\circ} \mathrm{C}\), then the pressure of air which is at \(0^{\circ} \mathrm{C}\) is : (in \(\mathrm{cm}\) of \(\mathrm{Hg}\) )TS EAMCET 2003 Medium
- A hydrogen atom emits a photon corresponding to an electron transition from to If is the Rydberg constant, then the wavelength of emitted photon isTS EAMCET 2021 Medium
- Three unequal resistances are connected in parallel. Two of these resistances are in the ratio 1:2. The equivalent resistance of these three resistors connected in parallel is \(1 \Omega\). What is the highest resistance value among these three resistances if no resistance is fractional?TS EAMCET 2016 Hard