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Explain, Why Temperature in Hot Summer, Falls Sharply After a Sharp Shower? - Physics

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प्रश्न

Explain, why temperature in hot summer, falls sharply after a sharp shower?

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उत्तर

Water has the highest specific heat capacity of 4.2 Jg-1 °C-1. Thus, when there is a sharp shower, the water evaporates. In doing so, it absorbs a large amount of heat from surroundings, hence temperature falls sharply.

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अध्याय 10: Specific Heat Capacity and Latent Heat - Short Answers

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आईसीएसई Physics [English] Class 10
अध्याय 10 Specific Heat Capacity and Latent Heat
Short Answers | Q 17

संबंधित प्रश्न

In an experiment on the specific heat of a metal, a 0.20 kg block of the metal at 150 °C is dropped in a copper calorimeter (of water equivalent 0.025 kg) containing 150 cm3 of water at 27 °C. The final temperature is 40 °C. Compute the specific heat of the metal. If heat losses to the surroundings are not negligible, is your answer greater or smaller than the actual value for the specific heat of the metal?


In an experiment to determine the specific heat capacity of a solid following operations were
made:
Mass of calorimeter + stirrer = x kg
Mass of water = y kg
Initial temperature of water t1℃
Mass of solid = z kg
Temperature of solid = t2 ℃
Temperature of mixture = t ℃
Specific heat capacity of calorimeter and water are c1 and c2 respectively. Express the specific
heat capacity c of the solid in terms of the above data.


Name the radiations for which the green house gases are opaque ?


What is meant by global warming?


A calorimeter has mass 100 g and specific heat 0.1 kcal/ kg °C. It contains 250 gm of liquid at 30°C having specific heat of 0.4 kcal/kg °C. If we drop a piece of ice of mass 10 g at 0°C, What will be the temperature of the mixture?


Write the approximate value of specific heat capacity of water in SI unit.

Read this activity and answer the following questions.

  1. Take three spheres of iron, copper and lead. the lead of equal mass.
  2. Put all the three spheres in boiling water in the beaker for some time.
  3. Take the three spheres out of the water.
  4. All the spheres will be at a temperature 100 °C.
  5. Put them immediately on the thick slab of wax.
  6. Note, the depth that each of the sphere goes into the wax.

Questions:

  1. Which property is determined from this activity?
  2. Give name to that property.
  3. Explain the term principal of heat exchange with the help of this activity.

Two uniform brass rods A and B of length land 2l and radii 2r and r respectively are heated to the same temperature. The ratio of the increase in the volume ofB to that of A is ____________.


Which of the substances P, Q, or R has the lowest specific heat? The temperature v/s time graph is shown ______.


Two blocks P and Q of different metals having their mass in the ratio 2 : 1 are given same amount of heat. Their temperature rises by same amount. Compare their specific heat capacities.


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