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If Two Bodies Are in Thermal Equilibrium in One Frame, Will They Be in Thermal Equilibrium in All Frames?

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प्रश्न

If two bodies are in thermal equilibrium in one frame, will they be in thermal equilibrium in all frames?

थोडक्यात उत्तर
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उत्तर

If two bodies are in thermal equilibrium in one frame, they will be in thermal equilibrium in all the frames. In case there is any change in temperature of one body due to change in frame, the same change will be acquired by the other body.

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पाठ 23: Heat and Temperature - Short Answers [पृष्ठ ११]

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एचसी वर्मा Concepts of Physics Volume 1 and 2 [English]
पाठ 23 Heat and Temperature
Short Answers | Q 1 | पृष्ठ ११

संबंधित प्रश्‍न

A hole is drilled in a copper sheet. The diameter of the hole is 4.24 cm at 27.0 °C. What is the change in the diameter of the hole when the sheet is heated to 227 °C? Coefficient of linear expansion of copper = 1.70 × 10–5 K–1.


If mercury and glass had equal coefficients of volume expansion, could we make a mercury thermometer in a glass tube?


For a constant-volume gas thermometer, one should fill the gas at


A gas thermometer measures the temperature from the variation of pressure of a sample of gas. If the pressure measured at the melting point of lead is 2.20 times the pressure measured at the triple point of water, find the melting point of lead.


The density of water at 0°C is 0.998 g cm–3 and at 4°C is 1.000 g cm–1. Calculate the average coefficient of volume expansion of water in the temperature range of 0 to 4°C.


A steel rod is clamped at its two ends and rests on a fixed horizontal base. The rod is unstrained at 20°C.
Find the longitudinal strain developed in the rod if the temperature rises to 50°C. Coefficient of linear expansion of steel = 1.2 × 10–5 °C–1.


An iron plate has a circular hole of a diameter 11 cm. Find the diameter of the hole when the plate is uniformly heated from 10° C to 90° C.`[alpha = 12 xx 10^-6//°"C"]`


A metal sphere 10.01 cm in diameter is placed on a brass ring of internal diameter 10 cm and at the same temperature of 12° C. The temperature up to which they should be heated together so that the metal sphere just passes through the ring is `[alpha_"metal"= 12 xx 10^-6//°"C" and alpha_"brass" =18 xx 10^-6//°"C"]` ____________.


The volume of a metal block changes by 0.86% when heated through 200 °C then its coefficient of cubical expansion is ______.


A bimetallic strip is made of aluminium and steel (αAl > αsteel) . On heating, the strip will ______.


The radius of a metal sphere at room temperature T is R, and the coefficient of linear expansion of the metal is α. The sphere is heated a little by a temperature ∆T so that its new temperature is T + ∆T. The increase in the volume of the sphere is approximately ______.


A student records the initial length l, change in temperature ∆T and change in length ∆l of a rod as follows:

S.No. l(m) ∆T (C) ∆l (m)
1. 2 10 `4 xx 10^-4`
2. 1 10 `4 xx 10^-4`
3. 2 20 `2 xx 10^-4`
4. 3 10 `6 xx 10^-4`

If the first observation is correct, what can you say about observations 2, 3 and 4.


Calculate the stress developed inside a tooth cavity filled with copper when hot tea at temperature of 57°C is drunk. You can take body (tooth) temperature to be 37°C and α = 1.7 × 10–5/°C, bulk modulus for copper = 140 × 109 N/m2.


The height of mercury column measured with brass scale at temperature T0 is H0. What height H' will the mercury column have at T = 0°C. Coefficient of volume expansion of mercury is γ. Coefficient of linear expansion of brass is α ______.


Length of steel rod so that it is 5 cm longer than the copper rod at all temperatures should be ______ cm.

(α for copper = 1.7 × 10-5/°C and α for steel = 1.1 × 10-5/°C)


Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.

  • Assertion A: When a rod lying freely is heated, no thermal stress is developed in it.
  • Reason R: On heating, the length of the rod increases. In light of the above statements.

choose the correct answer from the options given below:


A clock with an iron pendulum keeps the correct time at 15°C. If the room temperature is 20°C, the error in seconds per day will be near ______.

(coefficient of linear expansion of iron is 1.2 × 10-5/°C) 


The increase in the dimensions of a body due to an increase in its temperature is called ______.


Which of the following correctly lists the three types of thermal expansion?


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