A body accelerates uniformly from rest at 2ms−². Calculate the velocity after traveling 9m
A. 36m/s B. 18m/s C. 6m/s D. 4.5m/s E. 4.24m/s Correct Answer: Option C – 6m/s
A cell of e.m.f. 1.5V and internal resistance of 2.5Ω is connected in series with an ammeter of resistance 0.5W and a resistor of resistance of 7.0Ω. Calculate the current in the circuit.
A. 0.15A B. 0.20A C. 2.10A D. 3A E. 6.6A Correct Answer: Option A – 3A
A note of frequency of 2000Hz has a velocity of 400ms−1. What is the wavelength of the note?
A. 800m B. 200m C. 5m D. 2m E. 0.2m Correct Answer: Option E – 0.2m Explanation λ=v/f=400/2000=0.2mThe nucleon number and the proton number of a neutral atom of an element are 238 and 92 respectively. What is the number of neutrons in the atom?
A. 330 B. 238 C. 146 D. 119 E. 73 Correct Answer: Option C – 146 Explanation 238 – 92 = 146Products
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