Answer:
51 dioptre
Explanation:
u = Object distance = 2 cm
v = Image distance = 1 m
f = Focal length
Lens Equation
Power of lens
Power of the eye lens is 51 dioptre.
I think the correct answer from the choices listed above is option B. If two wires run parallel and the current passes through both wires in the same direction, <span> the wires move apart because the magnetic fields of each wire are opposite, so they repel each other.</span>
Work = (force) x (distance)
1 time: (400 newtons) x (3 meters) = 1,200 joules
15 times: (1,200 joules) x (15) = 18,000 joules