Chapter => wave optics
•Write the minimum 10 properties of visible light .
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It is the light in the presence of which we can see objects
Wavelength =4000-8000 A°
Affects a photographic plate
Does not show fluorescence
speed =3×10⁸m/s
Obey laws of refraction
Obey laws of reflection
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•Properties of visible light
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(1) No material medium is required for the propagation of light energy , i.e it travels even in vaccum .
(2)It's velocity in vaccum is maximum whose value is 3× 10^8 m/s .
(3) It's velocity is constant in all inertial frames i.e it is an absolute constant . it is independent of the relative velocity between source and the observer
(4) It's lies in the visible region of electromagnetic spectrum whose wavelength range is from 4000 to 8000A°
(5) its energy is of the order of eV
(6) It propagetes in straight line
(7) It exhibits the phenomenon of reflection , refraction , interference , diffraction, polarisation and double refraction
(8) It can emit elections from metal surface i.e it can produce photoelectric effect .
(9) It produces thermal effect and exerts pressure when incident upon a surface . it proves that light has momentum and energy
(10) it's velocity is different media . in rarer medium is more and in denser medium it is less.
(11) Light Energy propagates via two process
(a) the particles of the medium carry energy from one point of the medium to another .
(b) The particles transmit energy to the neighbouring particles and in the way energy propagates in the form of a disturbance
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Hope it helps you !;
@Raj❤
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