Calculate the wavelength of radiation with a frequency of 1.50 x 10^13Hz ?

Question

jamesj · Answer

Unam, best not to post your question in two places.  In any case, remember that if v is the speed of the wave (in this case, the speed of light, v = c), and $ \lambda $ is the wave length and $ f $ the frequency, then
$$ v = \lambda f $$
i.e.,
$$ \lambda = c/f $$

Use this equation to solve for wavelength.

anonymous · Answer

ah yes been a while since i've done physics, good catch

anonymous · Answer

so 3.10^8/1.50x10^13? which is 1.76x10^9??

shadowfiend · Answer

Your division is correct, but your result is not :) Remember, when you divide two powers of 10, you can subtract the exponents to get a general idea of where the result exponent should end up. Here, you have a 10^8 and a 10^13, which means your result should be in the vicinity of 10^-5, rather than 10^9.

anonymous · Answer

thankssss!