X-Rays of Wavelength 0

Multiple Choice

X-rays of wavelength 0.400000 nm are scattered from a material. The wavelength of the X-rays scattered at an angle of 45^o to the incident beam is

A) 0.200000 nm.
B) 0.282843 nm.
C) 0.400000 nm.
D) 0.400710 nm.
E) None of the above is correct.