Advertisements
Advertisements
प्रश्न
50 g of metal piece at 27°C requires 2400 J of heat energy so as to attain a temperature of 327°C . Calculate the specific heat capacity of the metal.
Advertisements
उत्तर
m = 50 g or `50/1000` kg
H = 2400 J
Q1 = 27 °C
Q2 = 327 °C
H = mcθ
c = `"H"/("m"theta)`
`= 2400/(50/1000 xx (327 - 27))`
`= 2400/(5/100 xx 300)`
`= 2400/15 = 160` J/Kg - K
APPEARS IN
संबंधित प्रश्न
Heat supplied to a solid change it into liquid. What is this change in the phase called?
Give one example where high specific heat capacity of water is used as heat reservoir ?
A heater of power P watt raises the temperature of m kg of a liquid by Δt K in time t s. Express
the specific heat capacity of liquid in terms of above data.
Explain the term boiling ?
What is meant by global warming?
Study the following procedure and answer the questions below:
1. Take 3 spheres of iron, copper and lead of equal mass.
2. Put all the 3 spheres in boiling water in a beaker for some time.
3. Take 3 spheres out of the water. Put them immediately on a thick slab of wax.
4. Note, the depth that each sphere goes into the wax.
i) Which property of substance can be studied with this procedure?
ii) Describe that property in minimum words.
iii) Explain the rule of heat exchange with this property.
Which of the substances P, Q, or R has the lowest specific heat? The temperature v/s time graph is shown ______.

The molar specific heats of an ideal gas at constant pressure and constant volume are denoted by Cp and Cv respectively. If `gamma = "C"_"p"/"C"_"v"` and R is the universal gas constant, then Cp is equal to ______.
