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why the least distance of distinct vision is 25 %
Stefan-Boltzmann law (Stefan, L. Boltzmann): The radiated power P (it is rate of emission of electromagnetic energy) of hot body is proportional to the radiating surface area,
Q. What is fluorescence? When an atomic or else molecular system is excited into higher energy state by absorption of energy it returns back to lower energy state in a time les
Einstein field equation The cornerstone of Einstein's general theory of relativity, relating to the gravitational tensor G to the stress-energy tensor T through the simple equa
Lorentz Transformation: The postulate of STR is proposed by Einstein in 1905. The two postulates are: 1. Principle of equivalence: According to this "The laws of physics
Light with a wavelength of 454.5 nm passes by two slits that are 95.2 cm from a screen. The distance among the centers of the central band and the first-order band is 15.2 mm.
Three coils each having resistance 3 Ω and inductive reactance 4Ω are linked (i) instar and (ii) in delta to a 415V, 3-phase supply. Calculate for each connection (a)
Que: Completely un-polarized light of intensity Io is occurrence on a polarizer whose polarization direction makes an angle of 15.0 degrees amid respect to the vertical. What i
A radiation of 500nm is incident on a metal surface whose work function is 3ev.why do we not observe the phenomenon of photoelecric effect? Ans) we do not observe the phenomenon
In airplane's airspeed is 2.0 x 102 km/h due east. Because of a wind blowing to the north, it is approaching its destination 15° north of east. a. What is the wind speed? b.
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