Q13 of 27 Page 80

Is the bulb of a thermometer made of diathermic or adiabatic wall?

As we know diathermic walls allows to conducts heat through it while adiabatic walls doesn’t allow. Hence bulb of a thermometer made of diathermic walls.


More from this chapter

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11

Refer to the plot of temperature versus time (Fig. 11.2) showing the changes in the state of ice on heating (not to scale).

Which of the following is correct?


 12

A glass full of hot milk is poured on the table. It begins to cool gradually. Which of the following is correct?

 14

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


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


 15

Why does a metal bar appear hotter than a wooden bar at the same temperature? Equivalently it also appears cooler than wooden bar if they are both colder than room temperature.