If the specific heat is low, the rate of rise or fall in temperature is ………………. for the same quantity of heat supplied.
A) low
B) more
C) equal
D) can’t say
1 Answers
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State the relation between principal specific heat capacity and molar specific heat capacity for a gas.
Molar specific heat capacity = Molecular weight × principal specific heat capacity. i.e. CV = μ × SP and CV = μ × SV where, μ is the molecular weight of the gas. [Note: Symbols (SV) and...
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If the temperature of 4 kg mass of a material of specific heat capacity 300 J/ kg °C rises from 20 °C to 30 °C. Find the heat received.
m = 4 kg, s = 300 J/kg °C ∆T = 30 – 20 = 10 °C To find: Heat received (Q) Formula: Q = ms∆T Calculation: From formula, Q = 4 × 300 ×...
2 Answers 1 views
Calculate the difference in the temperatures between the water at the top and bottom of a water fall 200 m high. Specific heat of water
Given: s = 4200 J kg-1 °C-1, h = 200 m To find: Difference in temperatures (∆T) Formulae: (i) Q = ms∆T (ii) P.E. = mgh Calculation: From formulae (j) and (ii) When water falls from top...
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‘ Same amount of heat is supplied to two liquids A and B. The liquid B shows greater rise in temperature
A) Specific heat of B is less than that of A
2 Answers 1 views
Calculate the amount of heat energy to be supplied to convert 2 kg of ice at 0 °C completely into water at 0 °C if latent heat of fusion
Mass (m) = 2 kg = 2 × 103 g. latent heat of fusion for ice (L) = 80 cal/g. To find: Heat energy (Q) Formula: Q = mL From formula, Q = 2 × 103 ×...
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If heat is supplied to water continuously, the temperature of water …………………
C) increases continuously till it reaches 100° C
2 Answers 1 views
The latent heat of vapourization of liquid of “m”gm when the heat energy of “Q” calories is supplied to change its state from liquid to gas is ………………
Q = mL so, L = Q/m. Hence, the correct option is (B) Q/m
2 Answers 1 views
The latent heat of vapourization of liquid of “m”gm when the heat energy of “Q” calories is supplied to change its state from liquid to gas is ………………
2 Answers
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Two iron bars of same length with unequal radii are heated for the same rise in temperature. The linear expansion will be
Correct option is: (A) more in thin bar.
2 Answers 6 views
Market equilibrium of a commodity shows, (a) excess demand (b) quantity demanded greater than quantity supplied
(c) quantity demanded equals quantity supplied
2 Answers 1 views