NEET Physics Thermal Properties of Matter Class 11 Questions

A steel rail of length 5 m and area of cross section 40 cm² is prevented from expanding along its length while the temperature rises by 10°C. If coefficient of linear expansion and Young's modulus of steel are 1.2 × 10⁻⁵ K⁻¹ and 2 × 10¹¹ Nm⁻² respectively, the force developed in the rail is approximately:

The stress-strain graph for a metal wire is as shown in the figure. In the graph, the region in which elasticity is maintained the ultimate strength and fracture points are represented by

The volume thermal expansion coefficient of an ideal gas at constant pressure is directly proportional to (Here T = absolute temperature of gas)

With increase in temperature, the viscosity of

A square lead slab of side 50 cm and thickness 10 cm is subjected to a shearing force (on its narrow face) of 9 × 10⁴ N. The lower edge is riveted to the floor. How much will the upper edge be displaced? (Shear modulus of lead = 5.6 × 10⁹ N m⁻²)

The ratio of excess pressure inside a soap bubble to the excess of pressure inside an air bubble in a soap solution is

Two wires A and B made of different materials of lengths 6.0 cm and 5.4 cm, respectively and area of cross sections 3.0 × 10⁻⁵ m² and 4.5 × 10⁻⁵ m², respectively are stretched by the same magnitude under a given load. The ratio of the Young's modulus of A to that of B is x : 3. The value of x is

What is the excess pressure inside a bubble of soap solution of radius 5.00 mm, given that the surface tension of soap solution at 20°C is 2.50 × 10⁻² Nm⁻¹?

Density of substance at 0°C is 10 gm/cc and at 100°C, its density is 9.7 gm/cc. The coefficient of linear expansion of the substance will be

Four rods of same material with different radii r and length are used to connect two reservoirs of heat at different temperatures. Which one will conduct most heat?

What is the latent heat of fusion of ice at 0 °C?

What is the SI unit of specific heat capacity?

What is the term for the temperature at which the solid and liquid states of a substance are in thermal equilibrium?

Which material expands about five times more than glass for the same rise in temperature?

What is the unit interval size of the absolute scale at the triple-point of water compared to the Fahrenheit scale?

Which mode of heat transfer involves the actual motion of matter and is possible only in fluids?

What does Newton's Law of Cooling state about the rate of cooling of a body?

What does Newton's Law of Cooling state about the rate of cooling of a body?

Which mode of heat transfer does not require a medium to occur?

What is the SI unit of latent heat as defined in the context of temperature and heat?

At what temperature does water change from liquid to vapor under normal atmospheric conditions?

What is the melting point of a substance at standard atmospheric pressure called?

What is plotted on the graph to study the temperature change in the calorimeter experiment described?

What is the relationship between the coefficient of volume expansion (αv) and the coefficient of linear expansion (αl) for a substance?

According to Newton's Law of Cooling, what does the rate of cooling of a body depend on?

Which mode of heat transfer does not require a medium for its operation?

Which mode of heat transfer does not require a medium to operate?

What does Newton's Law of Cooling state about the rate of cooling of a body?

What is the SI unit of latent heat?

What happens to the temperature of boiling water when more heat is added?

What is the increase in dimensions of a body due to a rise in temperature called?

According to Newton's Law of Cooling, the rate of cooling of a body is proportional to which of the following?

What term is used to describe the temperature at which solid and liquid states of a substance are in thermal equilibrium?

What is the term used for the increase in dimensions of a body due to an increase in its temperature?

What is the melting point of a substance defined as?

What does Newton's Law of Cooling state about the rate of cooling of a body?

Which mode of heat transfer does not require a medium to operate?

Which mode of heat transfer does not require a medium to operate?

Which of the following statements regarding thermal expansion is correct?

Which of the following statements about thermal expansion is correct?

Which of the following statements about Newton's Law of Cooling is correct?

Which of the following statements about heat transfer is correct?

Which of the following statements regarding temperature and heat is correct?

Which of the following statements about heat transfer and temperature is correct?

Which of the following statements about the melting point of a substance is correct?

Which of the following statements about the melting point and thermal equilibrium of substances is correct?

Which of the following statements about thermal expansion is correct?

Which of the following statements about Newton's Law of Cooling is correct?

Which of the following statements about heat transfer mechanisms is correct?

Which of the following statements about temperature and heat are correct?