Answer:
the speed of light in air is about 299,000,000 and 3×10⁸ m/s
Answer:
Explanation:
Given



According to the Faraday law of induction, induced emf is given by

Magnetic field 








Amplitude of EMF induced
Answer:
option E
Explanation:
given,
I is moment of inertia about an axis tangent to its surface.
moment of inertia about the center of mass
.....(1)
now, moment of inertia about tangent

...........(2)
dividing equation (1)/(2)



the correct answer is option E
Answer:
. always start on the north pole and terminate (end) on the South Pole
Explanation: