Advertisements
Advertisements
प्रश्न
Two substances A and B have specific heats c and 2 c respectively. If A and B are given Q and 4Q amounts of heat respectively, the change in their temperatures is the same. If the mass of A is m, what is the mass of B?
Advertisements
उत्तर
Let the mass of B = M.
Let the change in temperature be T for both the bodies, A and B.
The amount of heat in a body is given as
Q = m × c × Δ T
For body A,
Q = m × c × T
`=> "T" = "Q"/("mc")` ...(i)
For body B,
4Q = M × 2c × T
`=> "M" = (4"Q")/(2"c" xx "T")`
From (i), T = `Q/(mc)`
`=> "M" = (4Q)/(2c xx Q/(mc)) = 2m`
संबंधित प्रश्न
Convert 40°C to the (a) Fahrenheit scale (b) Kelvin Scale.
Write S.I. unit of temperature.
When a substance having mass 3 kg receives 600 cal of heat, its temperature increases by 10°C. What is the specific heat of the substance?
Calorie is the unit of :
Fill in the blank with the correct word, from the words in option:
All the temperature on the kelvin scale are in ____ figures.
At 0°C and 760 mm Hg pressure, a gas occupies a volume of 10Q cm3. The Kelvin temperature (Absolute temperature) of the gas is increased by one-fifth while the pressure is increased one and a half times. Calculate the final volume of the gas. [80 cc.]
Complete the following sentence:
SI unit of temperature is ______
If a substance is heated or cooled, the change in mass of that substance is
