Advertisements
Advertisements
प्रश्न
Specific heat capacity of a substance A is 3.8 J g-1 K-1 and of substance B is 0.4 J g-1 k-1. Which substance is a good conductor of heat? How did you arrive at your conclusion?
Advertisements
उत्तर
The specific heat capacity of substance B is lesser than that of A. So, for same mass and same heat energy, the rise in temperature for B will be more than that of A. Hence, substance B is a good conductor of heat.
APPEARS IN
संबंधित 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.
Two metallic blocks P and Q of masses in ratio 2: 1 are given the same amount of heat. If their temperature rise by the same amount, compare their specific heat capacities.
A mass m1 of a substance of specific heat capacity c1 at temperature t1 is mixed with a mass m2 of other substance of specific heat capacity c2 at a lower temperature t2. Deduce the expression for the temperature t of the mixture. State the assumption made, if any.
Who shall pay carbon tax ?
(i) State whether the specific heat capacity of a substance remains the same when its state changes from solid to liquid.
(ii) Give one example to support your answer.
Water boils at 120 °C in a pressure cooker. Explain the reason.
Is it possible to condense the water formed, back to ice by adding ice at 0°C. Explain with reason.
Give two reasons as to why copper is preferred over other metals for making calorimeters.
Will the value of specific heat’capacity and specific latent heat of a substance change if the scale is °F instead of °C?
Two cylinders of equal height and radius are made of copper and aluminum. Which of them conducts heat faster?
