In: Physics
a) The quasar is moving away from us.
So, the light will undergo red shift.
The equation for gravitational redshift is
Here, the observed wavelength = 3*10^-6 m
v = 0.95 c
So,
The visible light is of wavelength 400-700 nm
This light will not be visible to us, and will be in the infrared region.
b) Here, the emitted wavelength is 1 nm
So,
Again, the light will not be visible to us, and will be in the X ray wavelength itself.