Question

Which of the following statements is not correct regarding electromagnetic spectrum the velocity of Xrays is more than that of microwaves infra red radiations have larger wavelength than cosmic rays the frequency of microwaves is less than that of ultra violet rays Xrays have larger wave number than microwaves

Answer 1

1 is not correct as all the electromagnetic waves propagates with the speed of light i.e 3*10^8 ... so x ray and microwave will have same velocity