A work of 30 joules is done is transferring 5 millicoulombs of charge from a point B to a point A in an electric Held. The potential difference between B and A is?
A. 1.7 x 10^-4V B. 3.4 x 10^-4V C. 1.5 x 10−¹V D. 6.0 x 10³V E. 1.2 x 10^4V Correct Answer: Option D – 6.0 x 10³V
What is the electric potential energy between two protons each of charge q and at a distance of r apart? (Permittivity of free space = εo)
A. 4πεoq²r B. qr/4πεo C. q/4πεor D. q²/4πεor E. q²/4πεor Correct Answer: Option C – q/4πεorWhich of the following pairs of light rays shows the widest separation in the spectrum of white light?
A. Yellow and red B. Orange and green C. Violet and blue D. Blue and green E. Red and indigo Correct Answer: Option E – Red and indigo
A simple microscope forms an image twice the size of the object. If the focal length of the lens of the microscope is 20m. How far is the object from the lens?
A. 10m B. 20m C. 30m D. 40m E. 60m Correct Answer: Option C – 30mProducts
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