149530 Which one of the following is $v_{\mathrm{m}}-\mathrm{T}$ graph for perfectly black body? $v_{\mathrm{m}}$ is the frequency of radiation with maximum intensity. $T$ is the absolute temperature.

149531 In a given direction, the intensities of the scattered light by a scattering substance for two beams of light are in the ratio of $256: 81$. The ratio of the frequency of the first beam to the frequency of the second beam is :

149532 The amount of heat energy radiated by a metal at temperature $T$ is $E$. When the temperature is increased to $3 \mathrm{~T}$, energy radiated is :

149533 Two luminous point sources separated by a certain distance are at $10 \mathrm{~km}$ from an observer. If the aperture of his eye is $2.5 \times 10^{-3} \mathrm{~m}$ and the wavelength of light used is $500 \mathrm{~nm}$, the distance of separation between the point sources just seen to be resolved is :

149530 Which one of the following is $v_{\mathrm{m}}-\mathrm{T}$ graph for perfectly black body? $v_{\mathrm{m}}$ is the frequency of radiation with maximum intensity. $T$ is the absolute temperature.

149531 In a given direction, the intensities of the scattered light by a scattering substance for two beams of light are in the ratio of $256: 81$. The ratio of the frequency of the first beam to the frequency of the second beam is :

149532 The amount of heat energy radiated by a metal at temperature $T$ is $E$. When the temperature is increased to $3 \mathrm{~T}$, energy radiated is :

149533 Two luminous point sources separated by a certain distance are at $10 \mathrm{~km}$ from an observer. If the aperture of his eye is $2.5 \times 10^{-3} \mathrm{~m}$ and the wavelength of light used is $500 \mathrm{~nm}$, the distance of separation between the point sources just seen to be resolved is :

149530 Which one of the following is $v_{\mathrm{m}}-\mathrm{T}$ graph for perfectly black body? $v_{\mathrm{m}}$ is the frequency of radiation with maximum intensity. $T$ is the absolute temperature.

149531 In a given direction, the intensities of the scattered light by a scattering substance for two beams of light are in the ratio of $256: 81$. The ratio of the frequency of the first beam to the frequency of the second beam is :

149532 The amount of heat energy radiated by a metal at temperature $T$ is $E$. When the temperature is increased to $3 \mathrm{~T}$, energy radiated is :

149533 Two luminous point sources separated by a certain distance are at $10 \mathrm{~km}$ from an observer. If the aperture of his eye is $2.5 \times 10^{-3} \mathrm{~m}$ and the wavelength of light used is $500 \mathrm{~nm}$, the distance of separation between the point sources just seen to be resolved is :

149530 Which one of the following is $v_{\mathrm{m}}-\mathrm{T}$ graph for perfectly black body? $v_{\mathrm{m}}$ is the frequency of radiation with maximum intensity. $T$ is the absolute temperature.

149531 In a given direction, the intensities of the scattered light by a scattering substance for two beams of light are in the ratio of $256: 81$. The ratio of the frequency of the first beam to the frequency of the second beam is :

149532 The amount of heat energy radiated by a metal at temperature $T$ is $E$. When the temperature is increased to $3 \mathrm{~T}$, energy radiated is :

149533 Two luminous point sources separated by a certain distance are at $10 \mathrm{~km}$ from an observer. If the aperture of his eye is $2.5 \times 10^{-3} \mathrm{~m}$ and the wavelength of light used is $500 \mathrm{~nm}$, the distance of separation between the point sources just seen to be resolved is :