1.

200g of a solid ball at 20^(@)C is dropped in an equal amount of water at 80^(@)C. The resulting temperature is 60^(@)C. This means that specific heat of solid is

Answer»

One fourth of water
one HALF of water
twice of water
four times of water

Solution :HEAT lost by the water, `Q_(1) = 200 XX s_(w) xx (80-60)`
Heat GAINED by the solid, `Q_(2) = 200 xx s_(s) xx (60-20)`
According to the principle of calorimetry `Q_(1) = Q_(2)`
`:. 200 xx s_(w) xx (80 -60) = 200 xx s_(w) xx (60-20)`
or `s_(s) = (1)/(2) s_(w)`


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