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CBSE - XI Science - Physics - Thermal Properties of Matter

A clock which has a pendulum made of brass keeps correct time at 30 degrees celcius.How many seconds will it lose or gain in a day if the temperature falls to 0 degrees celcius.(Coefficient of thermal expansion for brass = 0.000018)

Asked by Tejas 25th November 2017, 3:11 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

<div>The coefficeint of linear expansion of solid in one direction is 0.03 x <img class="Wirisformula" alt="10 to the power of negative 3 end exponent" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=8cd96f7f69f9283103b299baa830a715.png" align="middle" />&nbsp;/ <img class="Wirisformula" alt="ring operator" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=0e1f2aef7ec4d447d96f71cda147c5a8.png" align="middle" />C and in directions perpendicular to it is 0.02 x <img class="Wirisformula" alt="10 to the power of negative 3 end exponent" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=8cd96f7f69f9283103b299baa830a715.png" align="middle" />/<img class="Wirisformula" alt="ring operator" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=0e1f2aef7ec4d447d96f71cda147c5a8.png" align="middle" />C . Find the coefficient of cubical expansion.</div> <div>1. 0.07 x <img class="Wirisformula" alt="10 to the power of negative 3 end exponent" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=8cd96f7f69f9283103b299baa830a715.png" align="middle" /></div> <div>2. 0.05 x <img class="Wirisformula" alt="10 to the power of negative 3 end exponent" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=8cd96f7f69f9283103b299baa830a715.png" align="middle" /></div> <div>3. 0.08 x <img class="Wirisformula" alt="10 to the power of negative 3 end exponent" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=8cd96f7f69f9283103b299baa830a715.png" align="middle" /></div> <div>4. 0.01 x <img class="Wirisformula" alt="10 to the power of negative 3 end exponent" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=8cd96f7f69f9283103b299baa830a715.png" align="middle" /></div>

Asked by Mamali Nanda 19th July 2016, 8:54 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

A cylinder is made up of materials having thermal conductivity K. If it is coated upto thrice of its radius of a material of thermal conductivity k, then the equivalent thermal conductivity will be
1. (K + k)/ 2
2. 2Kk/ (K + k)
3. (K + 3k)/4
4. (K + 8k)/9

Asked by Mamali Nanda 18th July 2016, 9:04 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

A metal rod at a temperature of 150 degree Celsius, radiates energy at arate of 20W. If its temperature is increased to 300 degree celsius,then it will radiate at a rate of about?
1. 40.8 W
2. 17.5 W
3. 68.3 W
4. 37.2 W
Please explain the answer as well.

Asked by mamalinanda1998 15th May 2016, 4:27 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

derive  Cp -Cv =R      with   full  explanation in lucid language

Asked by ppratim02 1st February 2016, 6:33 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

give point of difference between specific heat  and  heat capacity  (  as many  as you can )     giving  example  of each  

Asked by ppratim02 29th January 2016, 8:31 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

pls           show    mathematically  or say prove it ( explaining  step  by step)  mathematically that   "density of solid/liquid  decreases  with rise in temperature".        

Asked by ppratim02 8th January 2016, 8:37 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

The triple point of carbon dioxide is 216.55 K. Express this temperature on Fahrenheit scale. (Take absolute zero as 273 K)

Asked by Topperlearning User 13th April 2015, 3:41 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

Reading on a Fahrenheit thermometer is 7/5 times the reading on Celsius thermometer. What is the temperature on Fahrenheit and Celsius scale?

Asked by Topperlearning User 13th April 2015, 3:40 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

Which instrument is used to measure temperature? What are the various scales of temperature? Write the expression stating the relation between various scales of temperature.

Asked by Topperlearning User 13th April 2015, 3:28 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

What is thermal expansion? What are its types?

Asked by Topperlearning User 13th April 2015, 3:28 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

State some applications of thermal expansion.

Asked by Topperlearning User 13th April 2015, 3:20 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

What is Joule's Mechanical Equivalent of Heat?

Asked by Topperlearning User 13th April 2015, 3:19 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

Given the  for brass. Find

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

A 25 cm rod at 12 degree Celsius is heated to 80 degree Celsius. It increases 0.32 cm in length. Find the coefficient of linear expansion of material.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

Does the Fahrenheit scale and Kelvin scale give same reading? If yes at what temperature?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

What is heat? What is the unit of heat?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - XI Science - Physics - Thermal Properties of Matter

What kind of thermometers are used to measure  high temperatures like 5000oC ?

Asked by Topperlearning User 10th April 2014, 4:12 PM
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