Capacitors are used in the induction coil to?
A. control circuits B. prevent distortion of electric fields C. prevent electric sparks D. dissipate energy Correct Answer: Option C – prevent electric sparks
Calculate the force acting on an electron of charge 1.5 x 10^-19 placed in an electric field of intensity 10^5Vm−¹
A. 1.5×10-11N B. 1.5×10-12N C. 1.5×10-13N D. 1.5×10-14N Correct Answer: Option D – 1.5×10-14N Explanation F = qE F = 1.5 x 10-19 x 105 F = 1.5 x 10-14N
The angle of deviation of light of various colours passing through a triangular prism increases in the order?
A. red → green → blue B. green → violet → blue C. blue → red → green D. blue → green → red Correct Answer: Option A – red → green → blue
If the linear magnification of the objective and eyepiece convex lenses of a compound microscope are 4 and 7 respectively. Calculate the angular magnification of the microscope?
A. 2 B. 3 C. 11 D. 28 Correct Answer: Option D – 28 Explanation M = M1 x M2 = 4 x 7 = 28Products
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