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Nirmal dogra asks : In future which technique can be useful for making a body invisible ? a . Reflction of light b. Total internal reflection  
Category : General Knowledge |  On : 2012-05-20 01:13:21
 
Akshay singh says :
20/05/2012 01:36:54
total internal reflection
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Kartik asks : when a beam of red light passes through a violet paper beam after passing appears violet ,but acc. to energy conservation it is violation to laws as energy of photons increases,so what is the concept behind ? 
Category : Science |  On : 2012-05-12 10:28:59
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Kartik asks : when a beam of red light passes through a violet paper beam after passing appears violet ,but acc. to energy conservation it is violation to laws as energy of photons decreases,so what is the concept behind ? 
Category : Science |  On : 2012-05-08 11:58:17
 
Praneeth says :
10/05/2012 11:39:48
i think there is no violation................ as red has maximum wavelength, it has least energy.............as e in inversely proportional to wavelength......... also, violet has a more energy wen compare to red.............since its wavelength is less than that of red ................so, wen red light is passed through violet paper, energy is ditributed from violet to red and wavength of red decreases due to this,,,,,,, as wavenght decreases, colour will change into violet, as violet is the loser of energy...also wavelength decreases.......
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Rajeev vashisht be mba asks : A remote control of the TV uses 1. Laser 2. Infra red 3.Ultra violet 4. Visible Light 
Category : General Knowledge |  On : 2012-04-19 02:30:41
 
Rolly singh says :
19/04/2012 02:34:37
infared
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Sobhit kumar asks : what is light?what is the applications 
Category : CBSE & Others |  On : 2012-02-12 05:30:15
 
Shahana says :
15/02/2012 04:08:52
Light is part of the electromagnetic spectrum, which ranges from radio waves to gamma rays.This wave has amplitude, which is the brightness of the light, wavelength, which is the color of the light, and an angle at which it is vibrating, called polarization.
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