by Sunday | Nov 15 | Physics JAMB
A. radiation B. conduction C. convection D. radiation and conduction Correct Answer: Option C – convection Explanation The function of the radiator of a motor car is to “collect” heat from the circulating water and radiate some out, but it is itself...
by Sunday | Nov 15 | Physics JAMB
A. 3 cm B. 5 cm C. 6 cm D. 8 cm Correct Answer: Option A – 3 cm Explanation Real depth = thickness of the glass block = 9cm. Refractive index of the glass material = 1.5 But Refractive index = Real depth/Apparent depth => 1.5 = 9/Apparent depth therefore...
by Sunday | Nov 15 | Physics JAMB
A. acceleration is maximum B. weight is equal to the retarding force C. buoyancy force is equal to the viscous retarding force D. buoyancy force is more than the weight of the fluid displaced Correct Answer: Option B – weight is equal to the retarding...
by Sunday | Nov 15 | Physics JAMB
A. 5 rads-1 B. 6 rads-1 C. 5π rads-1 D. 10π rads-1 Correct Answer: Option D = 10π rads-1 Explanation Angular velocity w = 2π f. But f = frequency no. of oscillations per second. = 30/6 = 5Hz. therefore W = 2π x 5 = 10π...
by Sunday | Nov 15 | Physics JAMB
A. 20N, 45°E B. 20N, 45°W C. 10√2N, 45°W D. 10√2N, 45°E Correct Answer: Option D = 10√2N, 45°E Explanation From Pythagoras, R2 = 102 + 102 = 100 + 100 = 200 therefore R = √200 = √2 x 100 = 10√2, in the direction...
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