JEE Questions for Physics Thermal Properties Of Matter Quiz 6 - MCQExams.com

The change in volume V with respect to an increase in pressure P is shown in the adjoining diagram. For a fixed amount of a non ideal gas at a temperature T of the gas, the temperature T of the gas must be p
Physics-Thermal Properties of Matter-90925.png
  • less than the critical temperature
  • equal to the critical temperature
  • greater than the critical temperature
  • nothing can be definitely said
The Fig. per pressure P verses volume V graphs for a certain mass of a gas at two constant temperatures T1 and T2. Which of the inferences given below is correct :
Physics-Thermal Properties of Matter-90926.png
  • T1 = T2
  • T1 > T2
  • T1 < T2
  • None of the above
An ideal gas is heated isobarically. What fraction of the heat supplied will be used to increase the internal energy of the gas ?
  • 4/5
  • 3/5
  • 2/5
  • 1/5
The Fig. shows graphs of pressure versus density for an ideal gas at two temperatures T1 and T2. Then from the graph
  • T1 = T2
  • T1 > T2
  • T1 < T2
  • nothing can be predicted
The temperature of an ideal gas is increased from 120 k to 480 k. If at 120 k. the root mean square velocity of gas molecules is υ, at 480 K it becomes
  • 4 υ
  • 2 υ
  • υ/2
  • υ/4
The average translational kinetic energy of O2 (molar massmolecules at a particular temp is 0.048 eV. The translational kinetic energy of N2 (molar massmolecules in eV at the same temperature is
  • 0.0015
  • 0.003
  • 0.048
  • 0.768
Two water pipes P and Q having diametes 2 × 10–2m and 4 × 10-2 m respectively are joined in series with the main supply line of water. The velocity of water flowing in pipe P is
  • 4 times that of Q
  • 2 times that of Q
  • 1/2 times that of Q
  • 1/4 times that of Q
A stretched rubber has
  • increased kinetic energy
  • increased potential energy
  • decreased kinetic energy
  • decreased potential energy
Two soap bubbles A and B are formed at the two open ends of a tube. The bubble A is smaller than bubble B. If valve V is opened and air can flow freely between the bubbles, then
Physics-Thermal Properties of Matter-90931.png
  • there is no change in the size of the bubbles
  • the two bubbles will become of equal size
  • A will become smaller and B will become larger
  • B will become smaller and A will become larger
A large open tank has two holes in the wall. One is a square hole of side L at a depth y from the top and the other is a circular hole of radius R at a depth 4 y from the top. When the tank is completely filled with water, the quantities of water flowing out per second from both holes are the same. Then R is equal to

  • Physics-Thermal Properties of Matter-90932.png
  • 2 π L
  • L
  • L / 2 π
The ratio of the rms velocity of O2 (and hydrogen H2 (molecules at same temperature is
  • 1 : 4
  • 4 :1
  • 1 : 16
  • 16 : 1
A vessel containing 1 mole of O2 gas (molar massat a temperature T. The pressure of the gas is P. An identical vessel containing one mole of He gas (molar massat temperature 2 T has a pressure of
  • P/8
  • P
  • 2 P
  • 8 P
The mean distance between the atoms of iron is 3 × 10–10 m and interatomic force constant for iron is 7 N/m. The Young’s modulus of elasticity for iron is
  • 2.33 × 105 N/m2
  • 23.3 × 1010 N/m2
  • 2.33 × 109 N/m2
  • 2.33 × 1010 N/m2
When a bimetallic strip is heated, it
  • Does not bend at all
  • Gets twisted in the form of an helix
  • Bend in the form of an arc with the more expandable metal outside
  • Bends in the form of an arc with the more expandable metal inside
8 g of O2, 14 g of N2 and 22g of CO2 is mixed in a container of 10 litre capacity at 27oC. The pressure exerted by the mixture in terms of atmospheric pressure is (R = 0.082 litre atm. K–1 mol–1)
  • 1.4 atm
  • 2.5 atm
  • 3.7 atm
  • 8.7 atm
A spherical ball is dropped in a long column of viscous liquid. Which of the following graphs represent the variation of
(i) gravitational force with time
(ii) viscous force with time
(iii) net force acting on the ball with time
Physics-Thermal Properties of Matter-90938.png
  • Q, R, P
  • R, Q, P
  • P, Q, R
  • R, P, Q
On the Celsius scale the absolute zero of temperature is at
  • 0oC
  • –32oC
  • 100oC
  • –273.15oC
Oxygen boils at –183oC. This temperature is approximately
  • 215oF
  • –297oF
  • 329oF
  • 361oF
The temperature of the sun is measured with
  • Platinum thermometer
  • Gas thermometer
  • Pyrometer
  • Vapour pressure thermometer
Thermoelectric thermometer is based on
  • Photoelectric effect
  • Seebeck effect
  • Compton effect
  • Joule effect
Maximum density of H2O is at the temperature
  • 32oF
  • 39.2oF
  • 42oF
  • 4oF
The study of physical phenomenon at low temperature (below liquid nitrogen temperature) is called
  • Refrigeration
  • Radiation
  • Cryogenics
  • Pyrometry
\'Stem Correction\'in platinum resistance thermometers are eliminated by the use of
  • Cells
  • Electrodes
  • Compensating leads
  • None of these
The temperature of a body on Kelvin scale is found to be x K. When it is measured by Fahrenheit thermometer, it is found to be xoF, then the value of x is
  • 40
  • 313
  • 574.25
  • 301.25
Two bodies A and B have thermal emissivities of 0.01 and 0.81 respectively. The outer surface area of the two bodies are the same. The two bodies emit total radiate power at the same rate. The wavelength λB corresponding to maximum spectral radiancy in the radiation from B is shifted from the wavelength corresponding to maximum spectral radiancy in the radiation from A, by 1.00 μm. If the temperature of A is 5802 K
a. The temperature of B is 1934 K
b. λB = 1.5 μm
c. The temperature of B is 11604 K
d. The temperature of B is 2901 K
  • a and b
  • b and c
  • a, b and c
  • only a
Out of the following, in which vessel will the temperature of the solution be higher after the salt is completely dissolved?
Physics-Thermal Properties of Matter-90944.png
  • A
  • B
  • Equal in both
  • Information is not sufficient
A steel meter scale is to be ruled so that millimeter intervals are accurate within about 5 × 10–5 mm at a certain temperature. The maximum temperature variation allowable during the ruling is (Coefficient of linear expansion of steel = 10 × 10–6 K–1)
  • 2°C
  • 5°C
  • 7°C
  • 10°C
During illness an 80 kg man ran a fever of 102.2°F instead of normal body temperature of 98.6°F. Assuming that human body is mostly water, how much heat is required to raise his temperature by that amount?
  • 100 kcal
  • 160 kcal
  • 50 kcal
  • 92 kcal
Two holes of unequal diameters d1 and (d1 > d2) are cut in a metal sheet. If the sheet is heated
Physics-Thermal Properties of Matter-90947.png
  • Both d1 and d2 will decrease
  • Both d1 and d2 will increase
  • d1 will increase, d2 will decrease
  • d1 will decrease, d2 will increase
If earth suddenly stops rotating about its own axis , the increase in it\'s temperature will be

  • Physics-Thermal Properties of Matter-90948.png
  • 2)
    Physics-Thermal Properties of Matter-90949.png

  • Physics-Thermal Properties of Matter-90950.png
  • None of these
Latent heat of ice is 80 cal/g. A man melts 60 g of ice by chewing in 1 minute. His power is
  • 4800 W
  • 336 W
  • 1.33 W
  • 0.75 W
If there are no heat losses, the heat released by the condensation of x g of steam at 100°C into water at 100°C can be used to convert y gm of ice at 0°C into water at 100°C. Then the ratio y : x is nearly
  • 1 : 1
  • 2.5 : 1
  • 2 : 1
  • 3 : 1
The figure shows a glass tube (linear coefficient of expansion is α ) completely filled with a liquid of volume expansion coefficient y. On heating length of the liquid column does not change. Choose the correct relation between γ and α .
Physics-Thermal Properties of Matter-90954.png
  • γ = α
  • γ = 2α
  • γ = 3α

  • Physics-Thermal Properties of Matter-90955.png
The resistance of a resistance thermometer has values 2.71 and 3.70 ohm at 10°C and 100°C. The temperature at which the resistance is 3.26 ohm is
  • 40°C
  • 50°C
  • 60°C
  • 70°C
No other thermometer is as suitable as a platinum resistance thermometer to measure temperature in the entire range of
  • 0°C to 100°C
  • 100°C to 1500°C
  • –50°C to + 350°C
  • –200°C to 600°C
Absolute temperature can be calculated by
  • Mean square velocity
  • Motion of the molecule
  • Both (and (2)
  • None of the above
\'Stem Correction\' in platinum resistance thermometers are eliminated by the use of
  • Cells
  • Electrodes
  • Compensating leads
  • None of the above
One quality of a thermometer is that its heat capacity should be small. If P is a mercury thermometer, Q is a resistance thermometer and R thermocouple type then
  • P is best, R worst
  • R is best, P worst
  • R is best, Q worst
  • P is best, Q worst
A centigrade and a Fahrenheit thermometer are dipped in boiling water. The water temperature is lowered until the Fahrenheit thermometer registers 140o. What is the fall in temperature as registered by the Centigrade thermometer
  • 30o
  • 40o
  • 60o
  • 80o
Mercury boils at 367°C. However, mercury thermometers are made such that they can measure temperature up to 500°C. This is done by
  • Maintaining vacuum above mercury column in the stem of the thermometer
  • Filling nitrogen gas at high pressure above the mercury column
  • Filling nitrogen gas at low pressure above the mercury level
  • Filling oxygen gas at high pressure above the mercury column
At some temperature T, a bronze pin is a little large to fit into a hole drilled in a steel block. The change in temperature required for an exact fit is minimum when
  • Only the block is heated
  • Both block and pin are heated together
  • Both block and pin are cooled together
  • Only the pin is cooled
The volume of a gas at 20°C is 100 cm3 at normal pressure. If it is heated to 100°C, its volume becomes 125 cm3 at the same pressure, then volume coefficient of the gas at normal pressure is
  • 0.0015/°C
  • 0.0045/°C
  • 0.0025/°C
  • 0.0033/°C
The coefficient of superficial expansion of a solid is 2 × 10–5/° C. Its coefficient of linear expansion is
  • 4 × 10–5/° C
  • 3 × 10–5/° C
  • 2 × 10–5/° C
  • 1 × 10–5/° C
Coefficient of real expansion of mercury is 0.18 × 10–3 /° C. If the density of mercury at 0°C is 13.6 gm/cc, its density at 473 K is
  • 13.11 gm/cc
  • 26.22 gm/cc
  • 52.11 gm/cc
  • None of these
The real coefficient of volume expansion of glycerine is 0.000597 per°C and linear coefficient of expansion of glass is 0.000009 per°C. Then the apparent volume coefficient of expansion of glycerine is
  • 0.000558 per°C
  • 0.00057 per°C
  • 0.00027 per°C
  • 0.00066 per°C
A beaker is completely filled with water at 4°C. It will overflow if
  • Heated above 4°C
  • Cooled below 4°C
  • Both heated and cooled above and below 4°C respectively
  • None of the above
The volume of a metal sphere increases by 0.24% when its temperature is raised by 40°C. The coefficient of linear expansion of the metal is ....... °C
  • 2 × 10–5 per ° C
  • 6 × 10–5 per ° C
  • 2.1 × 10–5 per ° C
  • 1.2 × 10–5 per ° C
If on heating liquid through 80°C. the mass expelled is (1/100)th of mass still remaining, the coefficient of apparent expansion of liquid is
  • 1.25 × 10–4/° C
  • 12.5 × 10–4/° C
  • 1.25 × 10–5/° C
  • None of these
A piece of metal weighs 45 g in air and 25 g in a liquid of density 1.5 × 103 kg-m–3 kept at 30°C. When the temperature of the liquid is raised to 40°C, the metal piece weighs 27 g. The density of liquid at 40°C, is 1.25 × 103kg-m–3 . The coefficient of linear expansion of metal is
  • 1.3 × 10–3/° C
  • 5.2 × 10–3/° C
  • 2.6 × 10–3/° C
  • 0.26 × 10–3/° C
A cylindrical metal rod of length L0 is shaped into a ring with a small gap as shown. On heating the system
Physics-Thermal Properties of Matter-90969.png
  • x decreases, r and d increase
  • x and r increase, d decreases
  • x, r and d all increase
  • Data insufficient to arrive at a conclusion
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Physics Quiz Questions and Answers