The gravitational red shift is caused by
A) gravitational lensing.
B) rotating black holes.
C) time dilation.
D) Rayleigh scattering in the atmosphere.
Question 2
The flux through a coil changes from 4 10-5 Wb to 5 10-5 Wb in 0.1 s. What emf is induced in this coil?
A) 5 10-4 V
B) 1 10-4 V
C) 4 10-4 V
D) 3 10-4 V
E) 7 10-4 V