I believe the correct answer would be (b)
Answer:
In fact, any relative motion between the two will cause a Doppler shift/ effect in the frequency observed. ... If stars and galaxies are travelling away from us, the apparent frequency of the light they emit decreases and their colour will move towards the red end of the spectrum.
Explanation:
Answer:
4000 kilometers
Explanation:
1 cm equal 500 kilometers
8 cm equals 4000 km
Answer:
Explanation:
The refractive index of the suspected glass can be known by using the backe- line method. This process takes place in a petrographic microscope. In this method an oil comparable to the refractive index of the glass is used. At a point when the refractive index of the glass becomes equal to that of the oil in which it is immersed the yellow line under the observation of the plane polarized light gets disappeared. This method can be used to identify the refractive index of the suspect glass and comparing it with the source of origin or sample glass.