JEE Main & Advanced Physics Thermometry, Calorimetry & Thermal Expansion Question Bank

done Topic Test - Thermometry, Thermal Expansion and Calorimetry (3-5-21) Total Questions - 40

• question_answer1)
  On the Celsius scale the absolute zero of temperature is at
  A)
  \[0{}^\circ C\] done clear
  B)
  \[\,32{}^\circ C\] done clear
  C)
  \[100{}^\circ C\] done clear
  D)
  \[\text{ }273.15{}^\circ C\] done clear
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• question_answer2)
  The temperature on Celsius scale is \[25{}^\circ C\]. What is the corresponding temperature on the Fahrenheit scale
  A)
  \[40{}^\circ F\] done clear
  B)
  \[77{}^\circ F\] done clear
  C)
  \[50{}^\circ F\] done clear
  D)
  \[45{}^\circ F\] done clear
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• question_answer3)
  On centigrade scale the temperature of a body increases by 30 degrees. The increase in temperature on Fahrenheit scale is
  A)
  \[50{}^\circ \] done clear
  B)
  \[40{}^\circ \] done clear
  C)
  \[30{}^\circ \] done clear
  D)
  \[54{}^\circ \] done clear
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• question_answer4)
  Water has maximum density at               
  A)
  \[0{}^\circ C\] done clear
  B)
  \[32{}^\circ F\] done clear
  C)
  \[\text{ }4{}^\circ C\] done clear
  D)
  \[4{}^\circ C\] done clear
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• question_answer5)
  Ratio among linear expansion coefficient \[(\alpha )\], areal expansion coefficient \[(\beta )\] and volume expansion coefficient \[(\gamma )\] is
  A)
  1 : 2 : 3 done clear
  B)
  3 : 2 : 1 done clear
  C)
  4 : 3 : 2 done clear
  D)
  None of these done clear
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• question_answer6)
  Two rods, one of aluminum and the other made of steel, having initial length \[{{l}_{1}}\] and \[{{l}_{2}}\] are connected together to form a single rod of length \[{{l}_{1}}+{{l}_{2}}\]. The coefficients of linear expansion for aluminum and steel are \[{{\alpha }_{a}}\] and \[{{\alpha }_{s}}\] respectively. If the length of each rod increases by the same amount when their temperature are raised by  \[{{t}^{o}}C\], then find the ratio \[\frac{{{l}_{1}}}{({{l}_{1}}+{{l}_{2}})}\]
  A)
  \[\frac{{{\alpha }_{s}}}{{{\alpha }_{a}}}\] done clear
  B)
  \[\frac{{{\alpha }_{a}}}{{{\alpha }_{s}}}\] done clear
  C)
  \[\frac{{{\alpha }_{s}}}{({{\alpha }_{a}}+{{\alpha }_{s}})}\] done clear
  D)
  \[\frac{{{\alpha }_{a}}}{({{\alpha }_{a}}+{{\alpha }_{s}})}\] done clear
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• question_answer7)
  A quantity of heat required to change the unit mass of a solid substance, from solid state to liquid state, while the temperature remains constant, is known as
  A)
  Latent heat done clear
  B)
  Sublimation done clear
  C)
  Hoar frost done clear
  D)
  Latent heat of fusion done clear
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• question_answer8)
  A metallic ball and highly stretched spring are made of the same material and have the same mass. They are heated so that they melt, the latent heat required       
  A)
  Are the same for both done clear
  B)
  Is greater for the ball done clear
  C)
  Is greater for the spring done clear
  D)
  For the two may or may not be the same depending upon the metal done clear
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• question_answer9)
  A closed bottle containing water at \[30{}^\circ C\] is carried to the moon in a space-ship. If it is placed on the surface of the moon, what will happen to the water as soon as the lid is opened                 
  A)
  Water will boil done clear
  B)
  Water will freeze done clear
  C)
  Nothing will happen on it done clear
  D)
  It will decompose into \[{{H}_{2}}\] and \[{{O}_{2}}\] done clear
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• question_answer10)
  A block of mass 100 gm slides on a rough horizontal surface. If the speed of the block decreases from 10 m/s to 5 m/s, the thermal energy developed in the process is
  A)
  3.75 J done clear
  B)
  37.5 J done clear
  C)
  0.375 J done clear
  D)
  0.75 J done clear
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• question_answer11)
  5 g of ice at \[0{}^\circ C\] is dropped in a beaker containing 20 g of water at \[40{}^\circ C\]. The final temperature will be
  A)
  \[32{}^\circ C\] done clear
  B)
  \[16{}^\circ C\] done clear
  C)
  \[8{}^\circ C\] done clear
  D)
  \[24{}^\circ C\] done clear
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• question_answer12)
  The thermal capacity of a body is 80 cal, then its water equivalent is                        
  A)
  80 cal / gm done clear
  B)
  8 gm done clear
  C)
  80 gm done clear
  D)
  80 kg done clear
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• question_answer13)
  The resistance of a resistance thermometer has values 2.71 and 3.70 ohm at \[10{}^\circ C\] and \[100{}^\circ C\]. The temperature at which the resistance is 3.26 ohm is
  A)
  \[40{}^\circ C\] done clear
  B)
  \[50{}^\circ C\] done clear
  C)
  \[60{}^\circ C\] done clear
  D)
  \[70{}^\circ C\] done clear
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• question_answer14)
  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
  A)
  P is best, R worst done clear
  B)
  R is best, P worst done clear
  C)
  R is best, Q worst done clear
  D)
  P is best, Q worst done clear
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• question_answer15)
  A device used to measure very high temperature is
  A)
  Pyrometer done clear
  B)
  Thermometer done clear
  C)
  Bolometer done clear
  D)
  Calorimeter done clear
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• question_answer16)
  When a copper ball is heated, the largest percentage increase will occur in its  
  A)
  Diameter done clear
  B)
  Area done clear
  C)
  Volume done clear
  D)
  Density done clear
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• question_answer17)
  If the length of a cylinder on heating increases by 2%, the area of its base will increase by       
  A)
  0.5% done clear
  B)
  2% done clear
  C)
  1% done clear
  D)
  4% done clear
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• question_answer18)
  An iron bar of length 10 m is heated from \[0{}^\circ C\] to \[100{}^\circ C\]. If the coefficient of linear thermal expansion of iron is \[10\times {{10}^{\,6}}/{}^\circ C\], the increase in the length of bar is
  A)
  0.5 cm done clear
  B)
  1.0 cm done clear
  C)
  1.5 cm done clear
  D)
  2.0 cm done clear
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• question_answer19)
  Water is used to cool radiators of engines,  because
  A)
  Of its lower density          done clear
  B)
  It is easily available done clear
  C)
  It is cheap                      done clear
  D)
  It has high specific heat done clear
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• question_answer20)
  Two spheres made of same substance have diameters in the ratio 1 : 2. Their thermal capacities are in the ratio of
  A)
  1 : 2 done clear
  B)
  1 : 8 done clear
  C)
  1 : 4 done clear
  D)
  2 : 1 done clear
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• question_answer21)
  At atmospheric pressure, the water boils at \[100{}^\circ C\]. If pressure is reduced, it will boil at         
  A)
  Higher temperature          done clear
  B)
  Lower temperature done clear
  C)
  At the same temperature  done clear
  D)
  At critical temperature done clear
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• question_answer22)
  The SI unit of mechanical equivalent of heat is
  A)
  Joule \[\times \] Calorie done clear
  B)
  Joule/Calorie done clear
  C)
  Calorie \[\times \] Erg done clear
  D)
  Erg/Calorie done clear
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• question_answer23)
  A lead bullet of 10 g travelling at 300 m/s strikes against a block of wood and comes to rest. Assuming 50% of heat is absorbed by the bullet, the increase in its temperature is             (Specific heat of lead = 150J/kg, K)
  A)
  \[100{}^\circ C\] done clear
  B)
  \[125{}^\circ C\] done clear
  C)
  \[150{}^\circ C\] done clear
  D)
  \[200{}^\circ C\] done clear
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• question_answer24)
  During constant temperature, we feel colder on a day when the relative humidity will be          
  A)
  25%      done clear
  B)
  12.5% done clear
  C)
  50%      done clear
  D)
  75% done clear
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• question_answer25)
  Three liquids with masses \[{{m}_{1}},\,{{m}_{2}},\,{{m}_{3}}\] are thoroughly mixed. If their specific heats are \[{{c}_{1}},\,{{c}_{2}},\,{{c}_{3}}\] and their temperatures \[{{T}_{1}},\,{{T}_{2}},\,{{T}_{3}}\] respectively, then the temperature of the mixture is
  A)
  \[\frac{{{c}_{1}}{{T}_{1}}+{{c}_{2}}{{T}_{2}}+{{c}_{3}}{{T}_{3}}}{{{m}_{1}}{{c}_{1}}+{{m}_{2}}{{c}_{2}}+{{m}_{3}}{{c}_{3}}}\] done clear
  B)
  \[\frac{{{m}_{1}}{{c}_{1}}{{T}_{1}}+{{m}_{2}}{{c}_{2}}{{T}_{2}}+{{m}_{3}}{{c}_{3}}{{T}_{3}}}{{{m}_{1}}{{c}_{1}}+{{m}_{2}}{{c}_{2}}+{{m}_{3}}{{c}_{3}}}\] done clear
  C)
  \[\frac{{{m}_{1}}{{c}_{1}}{{T}_{1}}+{{m}_{2}}{{c}_{2}}{{T}_{2}}+{{m}_{3}}{{c}_{3}}{{T}_{3}}}{{{m}_{1}}{{T}_{1}}+{{m}_{2}}{{T}_{2}}+{{m}_{3}}{{T}_{3}}}\] done clear
  D)
  \[\frac{{{m}_{1}}{{T}_{1}}+{{m}_{2}}{{T}_{2}}+{{m}_{3}}{{T}_{3}}}{{{c}_{1}}{{T}_{1}}+{{c}_{2}}{{T}_{2}}+{{c}_{3}}{{T}_{3}}}\] done clear
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• question_answer26)
  Thermoelectric thermometer is based on
  A)
  Photoelectric effect done clear
  B)
  Seeback effect done clear
  C)
  Compton effect done clear
  D)
  Joule effect done clear
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• question_answer27)
  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 \[x{}^\circ F\], then the value of x is
  A)
  40 done clear
  B)
  313 done clear
  C)
  574.25 done clear
  D)
  301.25 done clear
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• question_answer28)
  A constant pressure air thermometer gave a reading of 47.5 units of volume when immersed in ice cold water, and 67 units in a boiling liquids. The boiling point of the liquid will be
  A)
  \[135{}^\circ C\] done clear
  B)
  \[125{}^\circ C\] done clear
  C)
  \[112{}^\circ C\] done clear
  D)
  \[100{}^\circ C\] done clear
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• question_answer29)
  A uniform metal rod is used as a bar pendulum. If the room temperature rises by \[10{}^\circ C\], and the coefficient of linear expansion of the metal of the rod is \[2\times {{10}^{-\,6}}\text{per}\,{}^\circ C\], the period of the pendulum will have percentage increase of
  A)
  \[-\,2\times {{10}^{-\,3}}\] done clear
  B)
  \[-\,1\times {{10}^{-\,3}}\] done clear
  C)
  \[2\times {{10}^{-\,3}}\] done clear
  D)
  \[1\times {{10}^{-\,3}}\] done clear
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• question_answer30)
  A solid ball of metal has a concentric spherical cavity within it. If the ball is heated, the volume of the cavity will
  A)
  Increase done clear
  B)
  Decrease done clear
  C)
  Remain unaffected done clear
  D)
  None of these done clear
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• question_answer31)
  A cylindrical metal rod of length \[{{L}_{0}}\] is shaped into a ring with a small gap as shown. On heating the system
  A)
  x decreases, r and d increase        done clear
  B)
  x and r increase, d decreases done clear
  C)
  x, r and d all increase done clear
  D)
  Data insufficient to arrive at a conclusion done clear
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• question_answer32)
  Melting point of ice                     
  A)
  Increases with increasing pressure done clear
  B)
  Decreases with increasing pressure done clear
  C)
  Is independent of pressure done clear
  D)
  Is proportional to pressure done clear
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• question_answer33)
  A body of mass 5 kg falls from a height of 30 metre. If its all mechanical energy is changed into heat, then heat produced will be                       
  A)
  350 cal done clear
  B)
  150 cal done clear
  C)
  60 cal done clear
  D)
  6 cal done clear
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• question_answer34)
  The mechanical equivalent of heat J is      
  A)
  A constant done clear
  B)
  A physical quantity done clear
  C)
  A conversion factor done clear
  D)
  None of the above done clear
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• question_answer35)
  Calorimeters are made of which of the following
  A)
  Glass done clear
  B)
  Metal done clear
  C)
  Wood done clear
  D)
  Either [a] or [c] done clear
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• question_answer36)
  A hammer of mass 1kg having speed of 50 m/s, hit a iron nail of mass 200 gm. If specific heat of iron is 0.105 cal/gm\[{}^\circ C\] and half the energy is converted into heat, the raise in temperature of nail is         
  A)
  \[7.1{}^\circ C\] done clear
  B)
  \[9.2{}^\circ C\] done clear
  C)
  \[10.5{}^\circ C\] done clear
  D)
  \[12.1{}^\circ C\] done clear
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• question_answer37)
  Dry ice is                                  
  A)
  Ice cube done clear
  B)
  Sodium chloride done clear
  C)
  Liquid nitrogen done clear
  D)
  Solid carbon dioxide done clear
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• question_answer38)
  The temperature of the sun is measured with
  A)
  Platinum thermometer done clear
  B)
  Gas thermometer done clear
  C)
  Pyrometer done clear
  D)
  Vapour pressure thermometer done clear
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• question_answer39)
  At what temperature the centigrade (Celsius) and Fahrenheit, readings are the same    
  A)
  \[\text{ }40{}^\circ \] done clear
  B)
  \[+\text{ }40{}^\circ \] done clear
  C)
  \[36.6{}^\circ \] done clear
  D)
  \[\text{ }37{}^\circ \] done clear
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• question_answer40)
  A pendulum clock keeps correct time at \[0{}^\circ C\]. Its mean coefficient of linear expansions is \[\alpha /{}^\circ C\], then the loss in seconds per day by the clock if the temperature rises by \[t{}^\circ C\] is               
  A)
  \[\frac{\frac{1}{2}\alpha \,t\times 864000}{1-\frac{\alpha \,t}{2}}\] done clear
  B)
  \[\frac{1}{2}\alpha \,t\times \,86400\] done clear
  C)
  \[\frac{\frac{1}{2}\alpha \,t\times 86400}{{{\left( 1-\,\frac{\alpha \,t}{2} \right)}^{2}}}\]   done clear
  D)
  \[\frac{\frac{1}{2}\alpha \,t\times 86400}{1+\frac{\alpha \,t}{2}}\] done clear
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