TWO PHOTONS HAVING

(A)EQUAL WAVELENGTH HAVE EQUAL LINEAR MOMENTA

(B)EQUAL ENERGIES HAVE QUAL LINEAR MOMENTA

(C)EQUAL FREQUENCIES HAVE EQUAL LINEAR MOMENTA

(D)EQUAL LINEAR MOMENTA HAVE EQUAL WAVELENGTS

ANSWER IS (D) BUT ACCORDING TO MY CALCULATIONS ALL OPTIONS ARE CORRECT

PLS HELP 

We havw MC=mc

C = , c = x₁y₁, where x₁ = fequency of second photon, and y₁ its corresponding wavelength, observe if MC=mc, where M=m, then C=c, which means that if lamda and y₁are equal, then nu also must be equal to x₁, but since ur options do not have equal frequency, then equal wavelenghts is the only way....

Hey , it is not confusing .

Just remember that momentum is a vector quantity .  So equal magnitude of momenta does not imply the equality of momenta .

I think u have got it now !!

DO NOT FORGET 2 RATE PLZ.............NUDGE IF U CAN'T UNDERSTAND GIVING THE LINK.............

And Hamba , what are you saying ?

Photons do not have any rest mass at all !!!

the only relation that we may apply for momentum is lambda = h/p  ( p = momentum magnitude ), coupled with special relativity ...................

Plz study introductory particle physics ( classs XII) to clear up this confusion !!