A. Red, orange and yellow only B. Infra-red, ultraviolet and blue only C. Indigo and green only D. Violet and…
A. 250W B. 125W C. 50W D. 35.4W E. 12.5W Correct Answer: Option A - 250W Explanation P = I²R…
A. 10/3π B. 5/2 π C. 4/5 π D. 2/3 π E. π/3 Correct Answer: Option C - 4/5 π…
A. The pitch of a note depends on the frequency of the vibrating source B. The loudness of a note…
A pipe open at both ends, produces a fundamental note. If the velocity of sound in air is V and…
A. R/4 B. R/3 C. R/2 D. 3R/4 E. 3R Correct Answer: Option B - R/3
A. 20° B. 45° C. 180° D. 225° E. 270° Correct Answer: Option C - 180°
A. Electrical energy B. Chemical energy C. Heat energy D. Mechanical energy E. Kinetic energy Correct Answer: Option A -…
The current in the primary coil of a transformer is 2.5A. If the coil has 50 turns and the secondary…
A. Octet rule B. Right-hand grip rule C. Maxwell’s screw rule D. Ampere’s swimming rule E. Fleming’s left-hand rule Correct…