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[sunsh]

So I know light is wave-particle. What is the wave part (interference,dispersion,diffraction)? What is the particle part(refraction, reflection, E=hf)?
Also what is the difference between the intensity of light and the energy of light?
One more, in my book it says doubling frequency would not double energy but affect intensity. how is this possible?
Thanks for any help

[vyom]

So I know light is wave-particle. What is the wave part (interference,dispersion,diffraction)? What is the particle part(refraction, reflection, E=hf)?

The particle part is that you can detect individual photons.
Quantum mechanics solved the confusion by showing that everything is a wave and particle - it's just that the wavelength is small for larger objects, which is why we only see the wave effects on very small things like photons and electrons.

[vyom]

Also what is the difference between the intensity of light and the energy of light?
One more, in my book it says doubling frequency would not double energy but affect intensity. how is this possible?
Thanks for any help

The energy of light is normally taken as the energy of an individual photon, so blue light has more energy than red light (shorter wavelength=high frequency=more energy).
Intensity is the total power = energy of photon * number of photons / second.
So doubling the frequency would double the energy of each photon and if you had the same number of photons it would also double the intensity.
Intensity and energy are not necessarily linked. You could have a very dim blue LED with high energy photons but a small number of them (a fraction of a Watt) and an infrared cutting laser with low energy photons but a lot of them (many 1000W)

[andy]

which is the best book 4 modern physics.IS HCV enouh?also tell me from where can i get problems 4 semiconductors.

[mrstudd]

u shld also consult Physics NCERT for modern physics ..........HCV is also good

[tomharry]

fr modern physics d c pandey is good.