The wavelength of radiation emitted by a body depends upon
Easy
Download our app for free and get startedPlay store
(c) ${\lambda _m}T = $constant
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
    For a black body at temperature $727^{\circ} C$, its radiating power is $60\; watt$ and temperature of surrounding is $227^{\circ} C$. If temperature of black body is changed to $1227^{\circ} C$ then its radiating power will be ..... $watt$
    View Solution
  • 2
    Wires $A$ and $B$ have identical lengths and have circular cross-sections. The radius of $A$ is twice the radius of $B$ $i.e.$ ${r_A} = 2{r_B}$. For a given temperature difference between the two ends, both wires conduct heat at the same rate. The relation between the thermal conductivities is given by
    View Solution
  • 3
    The maximum energy in thermal radiation from a source occurs at the wavelength $4000Å$ . The effective temperature of the source is ....... $K$
    View Solution
  • 4
    Which of the following is the $\nu_m = T$  graph for a perfectly black body ($\nu_m$ =maximum frequency of radiation)
    View Solution
  • 5
    A body cools from ${60^o}C$ to ${50^o}C$ in $10$ minutes. If the room temperature is ${25^o}C$ and assuming Newton's law of cooling to hold good, the temperature of the body at the end of the next $10$ minutes will be ......... $^oC$
    View Solution
  • 6
    A black body is heated from ${27^o}C$ to ${127^o}C$. The ratio of their energies of radiations emitted will be
    View Solution
  • 7
    A black body radiates energy at the rate of $1 \times 10^5 J / s \times m^2$ at temperature of $227^o C$. The temperature to which it must be heated so that it radiates energy at rate of $1 \times 10^9J/s m^2$, is
    View Solution
  • 8
    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
  • 9
    On a cold morning, a metal surface will feel colder to touch than a wooden surface because 
    View Solution
  • 10
    A thin square steel plate with each side equal to $10$ cm is heated by a blacksmith. The rate of radiated energy by the heated plate is $1134 W$ . The temperature of the hot steel plate is ....... $K$ (Stefan's constant $\sigma = 5.67 \times {10^{ - 8}}watt\;{m^{ - 2}}{K^{ - 4}}$, emissivity of the plate = $1$ )
    View Solution