149572
In the case of black body for energy distribution energy radiated by a blackbody which is given by, Planck's formula reduces to Rayleigh Jean's formula for
1 long wavelength region
2 short wavelength region
3 equal wavelength of radiation
4 long frequency region
Explanation:
A The Rayleigh-Jeans law agrees with experimental results at large wavelengths (low frequencies) but strongly disagrees at short wavelengths (high frequencies). This is inconsistency between observations and the predictions of classical physics is commonly known as the ultraviolet catastrophe.
TS EAMCET 28.09.2020
Heat Transfer
149593
Radiations coming from the Sun are mostly in the form of
1 light only
2 light and long wavelength infrared.
3 light and short wavelength infrared.
4 both short and long wavelength infrared.
Explanation:
C The radiations coming from the sun are mostly in the form of visible short wavelength.
NDA (II) 2019
Heat Transfer
149594
In which of the following phenomenon do heat waves travel along a straight line with the speed of light ?
1 Thermal conduction
2 Thermal convection
3 Thermal radiation
4 Both, thermal conduction and radiation
Explanation:
C Thermal radiation is energy emitted by a body in the form of radiation on account of its temperature. The heat radiations travel along straight lines with the speed of light $\left(3 \times 10^{8} \mathrm{~m} / \mathrm{s}\right)$.
NDA (II) 2019
Heat Transfer
149603
The source of unlimited thermal energy of stars is due to
1 nuclear fission
2 photo disintegration
3 nuclear fusion
4 $\gamma$-ray disintegration
Explanation:
C The source of unlimited energy of stars is due to nuclear fusion. As in the core of stars, lighter atoms fuse to heavier atoms and energy is released in the process known as nuclear fusion.
WB JEE-2007
Heat Transfer
149604
The emissive power of a black body is proportional to $(T=$ absolute temperature $)$
1 $\mathrm{E} \propto \mathrm{T}^{0}$
2 $\mathrm{E} \propto \mathrm{T}^{2}$
3 $\mathrm{E} \propto \mathrm{T}^{4}$
4 $\mathrm{E} \propto \mathrm{T}^{5}$
Explanation:
C According to Stefan's Boltzmann Law, the amount of radiation emitted per unit time from an area A of a black body at absolute temperature $\mathrm{T}$ is directly proportional to the fourth power of the temperature. $\mathrm{E} \propto \mathrm{T}^{4}$
149572
In the case of black body for energy distribution energy radiated by a blackbody which is given by, Planck's formula reduces to Rayleigh Jean's formula for
1 long wavelength region
2 short wavelength region
3 equal wavelength of radiation
4 long frequency region
Explanation:
A The Rayleigh-Jeans law agrees with experimental results at large wavelengths (low frequencies) but strongly disagrees at short wavelengths (high frequencies). This is inconsistency between observations and the predictions of classical physics is commonly known as the ultraviolet catastrophe.
TS EAMCET 28.09.2020
Heat Transfer
149593
Radiations coming from the Sun are mostly in the form of
1 light only
2 light and long wavelength infrared.
3 light and short wavelength infrared.
4 both short and long wavelength infrared.
Explanation:
C The radiations coming from the sun are mostly in the form of visible short wavelength.
NDA (II) 2019
Heat Transfer
149594
In which of the following phenomenon do heat waves travel along a straight line with the speed of light ?
1 Thermal conduction
2 Thermal convection
3 Thermal radiation
4 Both, thermal conduction and radiation
Explanation:
C Thermal radiation is energy emitted by a body in the form of radiation on account of its temperature. The heat radiations travel along straight lines with the speed of light $\left(3 \times 10^{8} \mathrm{~m} / \mathrm{s}\right)$.
NDA (II) 2019
Heat Transfer
149603
The source of unlimited thermal energy of stars is due to
1 nuclear fission
2 photo disintegration
3 nuclear fusion
4 $\gamma$-ray disintegration
Explanation:
C The source of unlimited energy of stars is due to nuclear fusion. As in the core of stars, lighter atoms fuse to heavier atoms and energy is released in the process known as nuclear fusion.
WB JEE-2007
Heat Transfer
149604
The emissive power of a black body is proportional to $(T=$ absolute temperature $)$
1 $\mathrm{E} \propto \mathrm{T}^{0}$
2 $\mathrm{E} \propto \mathrm{T}^{2}$
3 $\mathrm{E} \propto \mathrm{T}^{4}$
4 $\mathrm{E} \propto \mathrm{T}^{5}$
Explanation:
C According to Stefan's Boltzmann Law, the amount of radiation emitted per unit time from an area A of a black body at absolute temperature $\mathrm{T}$ is directly proportional to the fourth power of the temperature. $\mathrm{E} \propto \mathrm{T}^{4}$
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Heat Transfer
149572
In the case of black body for energy distribution energy radiated by a blackbody which is given by, Planck's formula reduces to Rayleigh Jean's formula for
1 long wavelength region
2 short wavelength region
3 equal wavelength of radiation
4 long frequency region
Explanation:
A The Rayleigh-Jeans law agrees with experimental results at large wavelengths (low frequencies) but strongly disagrees at short wavelengths (high frequencies). This is inconsistency between observations and the predictions of classical physics is commonly known as the ultraviolet catastrophe.
TS EAMCET 28.09.2020
Heat Transfer
149593
Radiations coming from the Sun are mostly in the form of
1 light only
2 light and long wavelength infrared.
3 light and short wavelength infrared.
4 both short and long wavelength infrared.
Explanation:
C The radiations coming from the sun are mostly in the form of visible short wavelength.
NDA (II) 2019
Heat Transfer
149594
In which of the following phenomenon do heat waves travel along a straight line with the speed of light ?
1 Thermal conduction
2 Thermal convection
3 Thermal radiation
4 Both, thermal conduction and radiation
Explanation:
C Thermal radiation is energy emitted by a body in the form of radiation on account of its temperature. The heat radiations travel along straight lines with the speed of light $\left(3 \times 10^{8} \mathrm{~m} / \mathrm{s}\right)$.
NDA (II) 2019
Heat Transfer
149603
The source of unlimited thermal energy of stars is due to
1 nuclear fission
2 photo disintegration
3 nuclear fusion
4 $\gamma$-ray disintegration
Explanation:
C The source of unlimited energy of stars is due to nuclear fusion. As in the core of stars, lighter atoms fuse to heavier atoms and energy is released in the process known as nuclear fusion.
WB JEE-2007
Heat Transfer
149604
The emissive power of a black body is proportional to $(T=$ absolute temperature $)$
1 $\mathrm{E} \propto \mathrm{T}^{0}$
2 $\mathrm{E} \propto \mathrm{T}^{2}$
3 $\mathrm{E} \propto \mathrm{T}^{4}$
4 $\mathrm{E} \propto \mathrm{T}^{5}$
Explanation:
C According to Stefan's Boltzmann Law, the amount of radiation emitted per unit time from an area A of a black body at absolute temperature $\mathrm{T}$ is directly proportional to the fourth power of the temperature. $\mathrm{E} \propto \mathrm{T}^{4}$
149572
In the case of black body for energy distribution energy radiated by a blackbody which is given by, Planck's formula reduces to Rayleigh Jean's formula for
1 long wavelength region
2 short wavelength region
3 equal wavelength of radiation
4 long frequency region
Explanation:
A The Rayleigh-Jeans law agrees with experimental results at large wavelengths (low frequencies) but strongly disagrees at short wavelengths (high frequencies). This is inconsistency between observations and the predictions of classical physics is commonly known as the ultraviolet catastrophe.
TS EAMCET 28.09.2020
Heat Transfer
149593
Radiations coming from the Sun are mostly in the form of
1 light only
2 light and long wavelength infrared.
3 light and short wavelength infrared.
4 both short and long wavelength infrared.
Explanation:
C The radiations coming from the sun are mostly in the form of visible short wavelength.
NDA (II) 2019
Heat Transfer
149594
In which of the following phenomenon do heat waves travel along a straight line with the speed of light ?
1 Thermal conduction
2 Thermal convection
3 Thermal radiation
4 Both, thermal conduction and radiation
Explanation:
C Thermal radiation is energy emitted by a body in the form of radiation on account of its temperature. The heat radiations travel along straight lines with the speed of light $\left(3 \times 10^{8} \mathrm{~m} / \mathrm{s}\right)$.
NDA (II) 2019
Heat Transfer
149603
The source of unlimited thermal energy of stars is due to
1 nuclear fission
2 photo disintegration
3 nuclear fusion
4 $\gamma$-ray disintegration
Explanation:
C The source of unlimited energy of stars is due to nuclear fusion. As in the core of stars, lighter atoms fuse to heavier atoms and energy is released in the process known as nuclear fusion.
WB JEE-2007
Heat Transfer
149604
The emissive power of a black body is proportional to $(T=$ absolute temperature $)$
1 $\mathrm{E} \propto \mathrm{T}^{0}$
2 $\mathrm{E} \propto \mathrm{T}^{2}$
3 $\mathrm{E} \propto \mathrm{T}^{4}$
4 $\mathrm{E} \propto \mathrm{T}^{5}$
Explanation:
C According to Stefan's Boltzmann Law, the amount of radiation emitted per unit time from an area A of a black body at absolute temperature $\mathrm{T}$ is directly proportional to the fourth power of the temperature. $\mathrm{E} \propto \mathrm{T}^{4}$
149572
In the case of black body for energy distribution energy radiated by a blackbody which is given by, Planck's formula reduces to Rayleigh Jean's formula for
1 long wavelength region
2 short wavelength region
3 equal wavelength of radiation
4 long frequency region
Explanation:
A The Rayleigh-Jeans law agrees with experimental results at large wavelengths (low frequencies) but strongly disagrees at short wavelengths (high frequencies). This is inconsistency between observations and the predictions of classical physics is commonly known as the ultraviolet catastrophe.
TS EAMCET 28.09.2020
Heat Transfer
149593
Radiations coming from the Sun are mostly in the form of
1 light only
2 light and long wavelength infrared.
3 light and short wavelength infrared.
4 both short and long wavelength infrared.
Explanation:
C The radiations coming from the sun are mostly in the form of visible short wavelength.
NDA (II) 2019
Heat Transfer
149594
In which of the following phenomenon do heat waves travel along a straight line with the speed of light ?
1 Thermal conduction
2 Thermal convection
3 Thermal radiation
4 Both, thermal conduction and radiation
Explanation:
C Thermal radiation is energy emitted by a body in the form of radiation on account of its temperature. The heat radiations travel along straight lines with the speed of light $\left(3 \times 10^{8} \mathrm{~m} / \mathrm{s}\right)$.
NDA (II) 2019
Heat Transfer
149603
The source of unlimited thermal energy of stars is due to
1 nuclear fission
2 photo disintegration
3 nuclear fusion
4 $\gamma$-ray disintegration
Explanation:
C The source of unlimited energy of stars is due to nuclear fusion. As in the core of stars, lighter atoms fuse to heavier atoms and energy is released in the process known as nuclear fusion.
WB JEE-2007
Heat Transfer
149604
The emissive power of a black body is proportional to $(T=$ absolute temperature $)$
1 $\mathrm{E} \propto \mathrm{T}^{0}$
2 $\mathrm{E} \propto \mathrm{T}^{2}$
3 $\mathrm{E} \propto \mathrm{T}^{4}$
4 $\mathrm{E} \propto \mathrm{T}^{5}$
Explanation:
C According to Stefan's Boltzmann Law, the amount of radiation emitted per unit time from an area A of a black body at absolute temperature $\mathrm{T}$ is directly proportional to the fourth power of the temperature. $\mathrm{E} \propto \mathrm{T}^{4}$