The axle of a railway engine is of length 150 cm. the engine oves with a speed of 60 km/hr in horizontal direction the angle of dip is `46^(@)` and horizontal component of earth's magnetic induction is `3.6xx10^(-5)Wb//m^(2)`. The emf that will exist between the ends of the axle is

Options

A. 1.0 mV
B. 0.39 mV
C. 0.93 mV
D. 0.5 mV

Answer

C

Explanation

`e=B_(V)lv`
`B_(H)tanthetalv`
`=(3.6xx10^(-5)xxtan46xx1.5xx60xx10^(3))/(3600)`
`=0.93mV`