A. oil B. metal C. gas D. water Correct Answer: Option B = metal
A. 1:80 B. 1:320 C. 1:1280 D. 1:4 Correct Answer: Option A = 1:80 Explanation NOTE: Firstly, it should be…
A. decreases B. increases C. increases then decrease D. remains constant Correct Answer: Option B - increases
A. 0.4 B. 1.0 C. 0.8 D. 0.5 Correct Answer: Option D = 0.5 Explanation Coefficient of friction μ =…
A. 4m² B. 8m² C. 2m² D. 1m² Correct Answer: Option A Explanation Pressure developed in the effort piston = F/a…
I. Jet-propelled aircraft II. Rocket propulsion III. The recoil of a gun IV. A person walking A. I and II…
A. 1500N B. 500N C. 4166N D. 750N Correct Answer: Option A - 1500N Explanation efficiency = (M.A / V.R)…
A. 144J B. 162J C. 81J D. 72J Correct Answer: Option B = 162J Explanation K.E = 1/2MV2 Force, F =…
A. intersect at the angle 45° B. intersect at the angle 60° C. be parallel D. be perpendicular Correct Answer:…
A. square steel ring B. triangular zinc ring C. soft iron ring D. loop of copper wire Correct Answer: Option…