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question_answer1)
When a copper ball is heated, the largest percentage increase will occur in its [EAMCET 1992]
A)
Diameter done
clear
B)
Area done
clear
C)
Volume done
clear
D)
Density done
clear
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question_answer2)
A vertical column 50 cm long at 50°C balances another column of same liquid 60 cm long at 100°C. The coefficient of absolute expansion of the liquid is [EAMCET 1990]
A)
0.005/°C done
clear
B)
0.0005/°C done
clear
C)
0.002/°C done
clear
D)
0.0002/°C done
clear
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question_answer3)
The apparent coefficient of expansion of a liquid when heated in a copper vessel is C and when heated in a silver vessel is S. If A is the linear coefficient of expansion of copper, then the linear coefficient of expansion of silver is [EAMCET 1991]
A)
\[\frac{C+S-3A}{3}\] done
clear
B)
\[\frac{C+3A-S}{3}\] done
clear
C)
\[\frac{S+3A-C}{3}\] done
clear
D)
\[\frac{C+S+3A}{3}\] done
clear
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question_answer4)
A uniform metal rod is used as a bar pendulum. If the room temperature rises by 10°C, and the coefficient of linear expansion of the metal of the rod is 2 ´ 10?6 per °C, the period of the pendulum will have percentage increase of [NSEP 1992]
A)
? 2 ´ 10?3 done
clear
B)
? 1 ´ 10?3 done
clear
C)
2 ´ 10?3 done
clear
D)
1 ´ 10?3 done
clear
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question_answer5)
A bar of iron is 10 cm at 20°C. At 19°C it will be (a of iron = 11 ´ 10?6/°C) [EAMCET 1997]
A)
11 ´ 10?6 cm longer done
clear
B)
11 ´ 10?6 cm shorter done
clear
C)
11 ´ 10?5 cm shorter done
clear
D)
11 ´ 10?5 cm longer done
clear
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question_answer6)
When a rod is heated but prevented from expanding, the stress developed is independent of [EAMCET 1997]
A)
Material of the rod done
clear
B)
Rise in temperature done
clear
C)
Length of rod done
clear
D)
None of above done
clear
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question_answer7)
Expansion during heating [CBSE PMT 1994]
A)
Occurs only in solids done
clear
B)
Increases the weight of a material done
clear
C)
Decreases the density of a material done
clear
D)
Occurs at the same rate for all liquids and solids done
clear
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question_answer8)
On heating a liquid of coefficient of cubical expansion g in a container having coefficient of linear expansion g / 3, the level of liquid in the container will [EAMCET 1993]
A)
Rise done
clear
B)
Fall done
clear
C)
Will remain almost stationary done
clear
D)
It is difficult to say done
clear
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question_answer9)
A pendulum clock keeps correct time at 0°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°C is [AFMC 1993]
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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question_answer10)
When a bimetallic strip is heated, it [CBSE PMT 1990]
A)
Does not bend at all done
clear
B)
Gets twisted in the form of an helix done
clear
C)
Bend in the form of an arc with the more expandable metal outside done
clear
D)
Bends in the form of an arc with the more expandable metal inside done
clear
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question_answer11)
A solid ball of metal has a concentric spherical cavity within it. If the ball is heated, the volume of the cavity will [AFMC 1997; Orissa PMT 2004]
A)
Increase done
clear
B)
Decrease done
clear
C)
Remain unaffected done
clear
D)
None of these done
clear
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question_answer12)
A litre of alcohol weighs [AFMC 1994]
A)
Less in winter than in summer done
clear
B)
Less in summer than in winter done
clear
C)
Some both in summer and winter done
clear
D)
None of the above done
clear
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question_answer13)
5 litre of benzene weighs [MNR 1996]
A)
More in summer than in winter done
clear
B)
More in winter than in summer done
clear
C)
Equal in winter and summer done
clear
D)
None of the above done
clear
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question_answer14)
Water has maximum density at [Pb. PMT 1997]
A)
0°C done
clear
B)
32°F done
clear
C)
? 4°C done
clear
D)
4°C done
clear
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question_answer15)
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 [SCRA 1998]
A)
Only the block is heated done
clear
B)
Both block and pin are heated together done
clear
C)
Both block and pin are cooled together done
clear
D)
Only the pin is cooled done
clear
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question_answer16)
If the length of a cylinder on heating increases by 2%, the area of its base will increase by [CPMT 1993; BHU 1997]
A)
0.5% done
clear
B)
2% done
clear
C)
1% done
clear
D)
4% done
clear
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question_answer17)
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 [Pb. PET 2002; DPMT 2001]
A)
0.0015/°C done
clear
B)
0.0045/°C done
clear
C)
0.0025/°C done
clear
D)
0.0033/°C done
clear
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question_answer18)
The coefficient of superficial expansion of a solid is 2 ´ 10?5 /°C. It's coefficient of linear expansion is [KCET 1999]
A)
4 ´ 10?5/°C done
clear
B)
3 ´ 10?5/°C done
clear
C)
2 ´ 10?5/°C done
clear
D)
1 ´ 10?5/°C done
clear
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question_answer19)
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 [BHU 1996; Pb. PMT 1999; DPMT 1998, 2003]
A)
102 done
clear
B)
10?2 done
clear
C)
10?3 done
clear
D)
10?4 done
clear
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question_answer20)
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 473K is [DPMT 1996]
A)
13.11 gm/cc done
clear
B)
26.22 gm/cc done
clear
C)
52.11 gm/cc done
clear
D)
None of these done
clear
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question_answer21)
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 [AIIMS 2000]
A)
0.000558 per°C done
clear
B)
0.00057 per°C done
clear
C)
0.00027 per°C done
clear
D)
0.00066 per°C done
clear
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question_answer22)
A beaker is completely filled with water at 4°C. It will overflow if [EAMCET 1992; BHU 1994; AFMC 2005]
A)
Heated above 4°C done
clear
B)
Cooled below 4°C done
clear
C)
Both heated and cooled above and below 4°C respectively done
clear
D)
None of the above done
clear
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question_answer23)
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 [Kerala PMT 2005]
A)
2 ´ 10?5 done
clear
B)
6 ´ 10?5 done
clear
C)
2.1 ´ 10?5 done
clear
D)
1.2 ´ 10?5 done
clear
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question_answer24)
Ratio among linear expansion coefficient (a), areal expansion coefficient (b) and volume expansion coefficient (g) is [RPMT 2000]
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_answer25)
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 [RPMT 2004]
A)
1.25 ´ 10?4/°C done
clear
B)
12.5 ´ 10?4/°C done
clear
C)
1.25 ´ 10?5/°C done
clear
D)
None of these done
clear
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question_answer26)
In cold countries, water pipes sometimes burst, because
A)
Pipe contracts done
clear
B)
Water expands on freezing done
clear
C)
When water freezes, pressure increases done
clear
D)
When water freezes, it takes heat from pipes done
clear
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question_answer27)
A cylindrical metal rod of length L0 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_answer28)
The length of a metallic rod is 5m at 0°C and becomes 5.01 m, on heating upto 100°C. The linear expansion of the metal will be [UPSEAT 1999]
A)
2.33 ´ 10?5 /°C done
clear
B)
6.0 ´ 10?5 /°C done
clear
C)
4.0 ´ 10?5 /°C done
clear
D)
2.0 ´ 10?5 /°C done
clear
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question_answer29)
A metal rod of silver at 0°C is heated to 100°C. It's length is increased by 0.19 cm. Coefficient of cubical expansion of the silver rod is [UPSEAT 2001]
A)
5.7 ´ 10?5/°C done
clear
B)
0.63 ´ 10?5/°C done
clear
C)
1.9 ´ 10?5/°C done
clear
D)
16.1 ´ 10?5/°C done
clear
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question_answer30)
A brass disc fits simply in a hole of a steel plate. The disc from the hole can be loosened if the system [UPSEAT 2001]
A)
First heated then cooled done
clear
B)
First cooled then heated done
clear
C)
Is heated done
clear
D)
Is cooled done
clear
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question_answer31)
An iron bar of length 10 m is heated from 0°C to 100°C. If the coefficient of linear thermal expansion of iron is 10 ´ 10?6 /°C, the increase in the length of bar is [UPSEAT 2005]
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_answer32)
If a cylinder of diameter 1.0 cm at 30°C is to be solid into a hole of diameter 0.9997 cm in a steel plate at the same temperature, then minimum required rise in the temperature of the plate is : (Coefficient of linear expansion of steel \[=12\times {{10}^{-6}}/{}^\circ C\]) [EAMCET 2001]
A)
25°C done
clear
B)
35°C done
clear
C)
45°C done
clear
D)
55°C done
clear
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question_answer33)
Surface of the lake is at 2°C. Find the temperature of the bottom of the lake [Orissa JEE 2002]
A)
2°C done
clear
B)
3°C done
clear
C)
4°C done
clear
D)
1°C done
clear
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question_answer34)
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 \[\frac{{{l}_{1}}}{({{l}_{1}}+{{l}_{2}})}\] [IIT-JEE (Screening) 2003]
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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