Two bodies $A$ and $B$ of equal masses, area and emissivity cooling under Newton's law of cooling from same temperature are represented by the graph. If $\theta$ is the instantaneous temperature of the body and $\theta_0$ is the temperature of surroundings, then relationship between their specific heats is ..........
  • A$S_A=S_b$ 
  • B$S_A > S_b$
  • C$S_A < S_b$
  • D
    None of these
Medium
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    It takes $10$ minutes to cool a liquid from $61^oC$ to $59^oC$. If room temperature is $30^oC$ then time taken in cooling from $51^oC$ to $49^oC$ is ....... $\min$
    View Solution
  • 2
    The value of Stefan’s constant is
    View Solution
  • 3
    Two identical square rods of metal are welded end to end as shown in figure $(a)$. Assume that $10\, cal$ of heat flows through the rods in $2\, min$. Now the rods are welded as shown in figure, $(b)$. The time it would take for $10$ cal to flow through the rods now, is ........ $\min$
    View Solution
  • 4
    In the figure, the distribution of energy density of the radiation emitted by a black body at a given temperature is shown. The possible temperature of the black body is ....... $K$
    View Solution
  • 5
    Which of the following is best close to an ideal black body
    View Solution
  • 6
    A solid sphere and a hollow sphere of the same material and size are heated to the same temperature and allowed to cool in the same surroundings. If the temperature difference between each sphere and its surroundings is $T$, then
    View Solution
  • 7
    If the temperature of the sun (black body) is doubled, the rate of energy received on earth will be increased by a factor of
    View Solution
  • 8
    The two ends of a metal rod are maintained at temperatures $100 ^o C$ and $110^o C$. The rate of heat flow in the rod is found to be $4.0\ J/s$. If the ends are maintained at temperatures $200^o\  C$ and $210^o\ C$, the rate of heat flow will be.... $J/s$
    View Solution
  • 9
    A large cylindrical rod of length $L$ is made by joining two identical rods of copper and steel of length $(\frac {L}{2})$ each . The rods are completely insulated from the surroundings. If the free end of copper rod is maintained at $100\,^oC$ and that of steel at $0\,^oC$ then the temperature of junction is........$^oC$ (Thermal conductivity of copper is $9\,times$ that of steel)
    View Solution
  • 10
    If the temperature of a black body be increased from ${27^o}C$ to ${327^o}C$ the radiation emitted increases by a fraction of
    View Solution