TS EAMCET · Physics · Thermal Properties of Matter
A hole of diameter is drilled in a metal sheet at . The linear expansion of metal is . The diameter of the hole when the temperature is raised to , is equal to
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Change in the temperature is ∆T=230-30=200°C. When the sheet is heated it will expand, thermal expansion is given by, L=L01+α∆T⇒L=5×1+2×10-5×200=5.02 cm
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
- A truck of mass 8 ton is carrying a block of mass 2 ton. If a breaking force of 25 kN is applied on the truck, then the frictional force acting on the block is
(Coefficient of static friction between the block and the truck is 0.3 )TS EAMCET 2025 Medium - The ratio of the displacements of a freely falling body during first, second and third seconds of its motion isTS EAMCET 2023 Medium
- A wheel of mass \(20 \mathrm{~kg}\) and radius \(30 \mathrm{~cm}\) is rotating at an angular speed of \(80 \mathrm{rev} / \mathrm{min}\) when the motor is turned off. Neglecting the friction at the axis, calculate the force that must be applied tangentially to the wheel to bring it to rest in 5 rev.TS EAMCET 2021 Medium
- A telescope has an objective of focal length \(100 \mathrm{~cm}\) and an eye-piece of focal length \(5 \mathrm{~cm}\). The magnifying power of the telescope isTS EAMCET 2020 Easy
-
A spherical glass is attached to a rigid wall as shown in the figure. An observer located at point \(\mathrm{O}\) is looking at a point \(\mathrm{A}\) on the wall. The refractive index of the glass is 1.5 and that of air is 1.0. The distances are \(\mathrm{OA}=8 \mathrm{~cm}, \mathrm{XA}=3\) \(\mathrm{cm}\). If the radius of curvature of spherical glass surface is \(R\) \(=5 \mathrm{~cm}\), then the apparent distance of \(\mathrm{A}\) from observer \(\mathrm{O}\) isTS EAMCET 2022 Hard - A piece of copper and a piece of germanium are cooled from room temperature to \(80 \mathrm{~K}\). Then, which one of the following is correct?TS EAMCET 2017 Easy
More PYQs from TS EAMCET
- Three bodies, a ring, a solid disc and a solid sphere roll down the same inclined plane without slipping. The radii of the bodies are Identical and they start from rest. If \(V_S, V_R\) and \(V_D\) are the speeds of the sphere, ring and disc, respectively when they reach the bottom, then the correct option isTS EAMCET 2019 Easy
- A steel wire of length 3 m and a copper wire of length 2.2 m are connected end to end. When the combination is stretched by a force, the net elongation is 1.05 mm . If the area of cross-section of each wire is \(6 \mathrm{~mm}^2\), then the load applied is (Young's module of steel and copper are respectively \(2 \times 10^{11} \mathrm{Nm}^{-2}\) and \(1.1 \times 10^{11} \mathrm{Nm}^{-2}\) )TS EAMCET 2024 Medium
- A man of \(50 \mathrm{~kg}\) is standing at one end on a boat of length \(25 \mathrm{~m}\) and mass \(200 \mathrm{~kg}\). If he starts running and when he reaches the other end, he has a velocity \(2 \mathrm{~ms}^{-1}\) with respect to the boat. The final velocity of the boat is : (in \(\mathrm{ms}^{-1}\) )TS EAMCET 2006 Easy
- The temperature of a thin uniform circular disc, of one metre diameter is increased by \(10^{\circ} \mathrm{C}\). The percentage increase in moment of inertia of the disc about an axis passing through its centre and perpendicular to the circular face : (linear coefficient of expansion \(\left.=11 \times 10^{-6} /{ }^{\circ} \mathrm{C}\right)\)TS EAMCET 2006 Medium
- The de Broglie wavelength of an electron accelerated between two plates having a potential difference of 900 \(\mathrm{V}\) is neariy.TS EAMCET 2023 Hard
- A car moving towards a cliff emits sound of frequency ' \(n\) '. If the difference in frequencies of the horn and its echo heard by the driver of the car is \(10 \%\) of ' \(n\) ', then the speed of the car is nearly (Speed of sound in air is \(336 \mathrm{~ms}^{-1}\) )TS EAMCET 2025 Medium