According to ‘Newton’s Law of cooling’, the rate of cooling of a body is proportional to the
Easy
Download our app for free and get startedPlay store
(d)
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
    When $p$ calories of heat is given to a body, it absorbs $q$ calories; then the absorbtion power of body will be
    View Solution
  • 2
    Two different rods $A$ and $B$ are kept as shown in figure. The variation of temperature of different cross sections is plotted in a graph shown in figure. The ratio of thermal conductivities of $A$ and $B$ is
    View Solution
  • 3
    If the initial temperatures of metallic sphere and disc, of the same mass, radius and nature are equal, then the ratio of their rate of cooling in same environment will be
    View Solution
  • 4
    A cup of tea cools from ${80^0}C$ to ${60^o}C$ in one minute. The ambient temperature is ${30^o}C$. In cooling from ${60^o}C$ to ${50^o}C$ it will take ....... $\sec$
    View Solution
  • 5
    It is estimated that per minute each $cm^2$ of earth receives about $2\ cal (1\ cal = 4.18\ J)$ of heat  energy from the sun. This is called Solar constant. In $SI$ units the value is
    View Solution
  • 6
    As compared to the person with white skin, the person with black skin will experience
    View Solution
  • 7
    A $5cm$ thick ice block is there on the surface of water in a lake. The temperature of air is $-10°C$ ; how much time it will take to double the thickness of the block ......  hour ($L = 80 cal/g, Kicc = 0.004 Erg/s-k, dice = 0.92 g cm^{-3}$)
    View Solution
  • 8
    A particular star (assuming it as a black body) has a surface temperature of about $5 \times {10^4}K.$The wavelength in nanometers at which its radiation becomes maximum is $(b = 0.0029 mK)$
    View Solution
  • 9
    Three very large plates of same area are kept parallel and close to each other. They are considered as ideal black surfaces and have very high thermal conductivity. The first and third plates are maintained at temperatures $2\ T$ and $3\ T$ respectively. The temperature of the middle ($i.e.$ second) plate under steady state condition is
    View Solution
  • 10
    For cooking the food, which of the following type of utensil is most suitable
    View Solution