A body, which emits radiations of all possible wavelengths, is known as ...........
  • A
    Good conductor
  • B
    Partial radiator
  • C
    Absorber of photons
  • D
    Perfectly black body
Easy
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
    Which of the following statements is wrong
    View Solution
  • 2
    The temperature of a body falls from ${50^o}C$to ${40^o}C$ in $10$ minutes. If the temperature of the surroundings is ${20^o}C$ Then temperature of the body after another $10$ minutes will be ........ $^oC$
    View Solution
  • 3
    The distribution of relative intensity $I (\lambda)$ of blackbody radiation from a solid  object versus the wavelength $\lambda$ is shown in the figure. If the Wien displacement law  onstant is $2.9 × 10^{-3}\  mK$, what is the approximate temperature of the object ....... $K$
    View Solution
  • 4
    The lengths and radii of two rods made of same material are in the ratios $1 : 2$ and $2 : 3$ respectively. If the temperature difference between the ends for the two rods be the same, then in the steady state, the amount of heat flowing per second through them will be in the ratio
    View Solution
  • 5
    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
  • 6
    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
  • 7
    Two identical plates of different metals are joined to form a single plate whose thickness is double the thickness of each plate. If the coefficients of conductivity of each plate are $2$ and $3$ respectively, then the conductivity of composite plate will be
    View Solution
  • 8
    A black body at $1227^o C$ emits radiations with maximum intensity at a wavelength of $5000\;\mathring A$ . If the temperature of the body is increased by $1000^o C$, the maximum intensity will be observed at ...... $\mathring A$
    View Solution
  • 9
    The heat is flowing through a rod of length $50 cm$ and area of cross-section $5c{m^2}$. Its ends are respectively at ${25^o}C$ and ${125^o}C$. The coefficient of thermal conductivity of the material of the rod is $0.092 kcal/m×s×^\circ C$. The temperature gradient in the rod is
    View Solution
  • 10
    A body, which emits radiations of all possible wavelengths, is known as ...........
    View Solution