Determine the focal length of a thin converging lens if t...
Determine the focal length of a thin converging lens if the power is 5.0 dioptres
0.1 m
0.2 m
2.0 m
2.5 m
Correct answer is B
Power of a lens = 1f
f = focal length
f = 1p
= 15
= 0.2m
A cell of emf 2 V has an internal resistance of 0.5 Ω. A current of 0.4 A passes through an ex...
An alternating current can induce voltage because it has ...
Which of the following factors does not affect the rate of evaporation of a liquid? ...
The earth's gravitational field intensity at its surface is about (G = 6.7 × 10−11...