Download App

Heat and Temperature — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsHeat and Temperature2 Marks
Question
It is heard sometime that mercury is used in defining the temperature scale because it expands uniformly with temperature. If the temperature scale is not yet defined, is it logical to say that a substance expands uniformly with temperature?
✓

Answer

It is not illogical to say that mercury expands uniformly before temperature scale was defined. It's uniform expansion can be studied by comparing the expansion of mercury with expansion of other substances (like alcohol water etc).

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from Heat and Temperature→Heat and Temperature — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

An inductor is connected to a battery through a switch. Explain why the emf induced in the inductor is much larger when the switch is opened as compared to the emf induced when the switch is closed.
→
Give examples where:
  1. The velocity of a particle is zero but its acceleration is not zero.
  2. The velocity is opposite in direction to the acceleration.
  3. The velocity is perpendicular to the acceleration.
→
What is the law of pressure or Gay- Lussac's law?
→
2 cm from a horizontal pipe of unequal bore. At a point of pressure equal to Hg column, water is flowing out at a velocity of $40 cm / sec$. Calculate the pressure at the point where the velocity of water flow is $60 cm / sec$.
→
Can a flight of a bird, an example of composition of vectors. Why?
→
A steel wire and a copper wire of equal length and equal cross$-$sectional area are joined end to end and the combination is subjected to a tension. Find the ratio of.
  1. The stresses developed in the two wires.
  2. The strains developed. $Y$ of steel $= 2 \times 10^{11}N/m^2$. Y of copper = $1.3 \times 10^{11}N/m^2$.
→
If two bodies are in thermal equilibrium in one frame, will they be in thermal equilibrium in all frames?
→
Give the magnitude and direction of the net force acting on a stone of mass 0.1kg, (Neglect air resistance throughout.) Just after it is dropped from the window of a stationary train.
→
Using component of force, show that it is easier to pull a lawn roller than to push it.
→
A ball is projected from a point on the floor with a speed of 15m/s at an angle of 60° with the horizontal. Will it hit a vertical wall 5m away from the point of projection and perpendicular to the plane of projection without hitting the floor? Will the answer differ if the wall is 22m away?
→