The lens equation gives d relation between focal length, object distance n image distance.
1/f = 1/v + 1/u
seldon
Answer:
42.87
Explanation:
Google
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420/9.8 which equals 42.87.
The correct answer is
C. The battery
The battery is a device that provides a potential difference in the circuit, and so an electromotive force (e.m.f.) which pushes the electrons in the circuit from the negative pole towards the positive pole of the battery, so they move through the circuit. Therefore, it provides electrical energy.
If Earth was twice as far from the sun, the force of gravity attracting the Earth to the sun would be only one-quarter as strong. The correct answer will be C.
Law of reflection is the angle of incidence = angle of reflection.
