Related Questions

Wavelength corresponding to the maximum energy is inversely proportional to the absolute temperature. This is __________ law.
A Stefan's
B Dalton's
C Wien's
D Kirchoffs
Radiant energy received by a body is proportional to (where, d = the distance between the object emitting radiation and that receiving it.)
A $$\sqrt {\text{d}} $$
B d
C d2
D d1.5
The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body)
A α.T
B α.$$\frac{1}{{\text{T}}}$$
C α.T4
D Independent of T
A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the
A Global warming
B Green house
C Atmospheric effect
D Ionosphere
একটি ধাতব তলে λ তরঙ্গদৈর্ঘ্যের একবর্ণী আলোকরশ্মি আপতিত হলে ফটো-ইলেক্ট্রন নির্গত হয় এবং এক্ষেত্রে বিভবের মান 3Vo একই তলে যখন 2λতরঙ্গদৈর্ঘ্যের একবর্ণী আলো আপতিত হয়, তখন নিবৃত্তি বিভবের মান Vol ফটো-ইলেক্ট্রন নির্গত হওয়ার জন্য ঐ তলটির সূচন তরঙ্গদৈর্ঘ্যের মান নির্ণয় কর।(A monochromatic light of wavelength λ is incident on a metallic surface then ejects photo-electron and the value of stopping potential is 3Vo. When the same surface is illuminated by a light of wavelength 2λ., the stopping potential becomes Vo. Calculate the threshold wavelength for this surface to eject photo electrons.)
A 6λ
B 8λ
C 4λ3
D λ
E 4λ
Wien’s law states that the wave length corresponding to ________ is proportional to the absolute temperature.
A Minimum energy
B Maximum energy
C Both (A) and (B)
D None of these
According to Wein's displacement law, the wavelength at which maximum radiation occurs
A Is inversely proportional to the temperature
B Is proportional to the temperature
C Is inversely proportional to the pressure
D Is proportional to the pressure
According to Stefan Boltzmann law, the total radiation from a black body per second per unit area is directly proportional to the
A Absolute temperature
B Square of the absolute temperature
C Cube of the absolute temperature
D Fourth power of the absolute temperature
According to Stefan's law, the total radiation from a black body per second per unit area is proportional to
A Absolute temperature
B T2
C T5
D T
For a perfect gas, according to Boyle’s law (where p = Absolute pressure, v = Volume and T = Absolute temperature)
A $$\frac{{\text{v}}}{{\text{T}}}$$ = constant, if p is kept constant
B pv = constant, if T is kept constant
C $$\frac{{\text{T}}}{{\text{p}}}$$ = constant, if v is kept constant
D $$\frac{{\text{p}}}{{\text{T}}}$$ = constant, if v is kept constant

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