Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

How does the density of a substance depend on temperature? Explain with a mathematical formula?
Asked by shobhit_dc | 23 Jul, 2011, 11:33: PM
answered-by-expert Expert Answer
 
Density does not change as long as temperature remains the same. For every substance, the number of particles in a given volume remain constant if the temperature is kept constant. As the temperature is increased, the particles move more quickly and farther apart, thus increasing the substance's volume. When this happens, the density (which is the mass to volume ratio) decreases because mass remains constant, but volume increases.
Answered by | 24 Jul, 2011, 01:32: AM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
a body cools from 90°c to 70°c in 5minutes. temperature of surrounding is 30°c. its temperature after next 10 min is
Asked by manjushri30nov | 31 Dec, 2023, 07:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
the unit of thermal conductivity is
question image
Asked by abhishekmadheshiya708 | 22 Dec, 2023, 01:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
  The temperature of perfect black body changes from 3000K to 4000K.What is the percentage change in energy radiation.
Asked by ankitvariya1000 | 29 Mar, 2022, 11:19: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
The temperature of perfect black body changes from 3000K to 4000K.What is the percentage change in energy radiation.
Asked by jatinsahu37 | 27 Mar, 2022, 04:45: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
why we fill hotter in two thin blankets than one thick blanket
Asked by parineetsandhu3232 | 11 Mar, 2022, 05:49: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Heat is added to 10^3 cubic cm of water at atmospheric pressure. The water's temperature increases by 50 degrees celsius. Find (a) the work done by the water as it expands (b) the increase in water's internal energy.
Asked by arjunsah797 | 01 Mar, 2022, 03:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Calculate the change in volume of an iron block 10cm ×20cm×5cm if its temperature is raised from 10°c to 40°c Given coefficient of linear expansion of iron = 1.2×10^-5 °c ^-1
Asked by sanjanapujar80 | 12 Jun, 2021, 10:29: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
10 gm of ice at -10℃ is added to 10gm of water at 85℃.What is the final temperature? 
Asked by akpdbbhhs | 14 May, 2021, 12:51: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
A furnace emits radiation at 2000 K. Treating it as black body radiation, calculate Wave length at which emission is maximum and the corresponding radiant flux density
Asked by vikranthpoluparthi1 | 04 May, 2021, 12:30: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
what is thermal expantion
Asked by shubhamgoyal1722 | 15 Dec, 2020, 11:18: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×