Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
219 and 87
84 and 223
223 and 87
219 and 81
Correct answer is A
\(^{235}_{92}U\) \(\to\) 4\((^{4}_{2}\alpha)\) + 3\((^{0}_{-1}e)\) + \(^{b}_{a}y\)
a + (4 + 2) + (3x - 1) = 92 \(\Rightarrow\) a = 87
b + (4 x 4) + (3 x 0) = 235 \(\Rightarrow\) b = 219
\(^{b}_{a}Y\) = \(^{219}_{87}Y\)
If two parallel conductors carry currents flowing in the same direction, the conducts will
attract each other
repel each other
both move in the same direction
have no effect on each other
Correct answer is A
No explanation has been provided for this answer.
i and ii
i and iv
ii and iii
iii and iv
Correct answer is B
No explanation has been provided for this answer.
4 : 5
5 : 4
16 : 25
25 : 16
Correct answer is B
P1 = \(\frac{V^2_1}{R_1}\) and P2 = \(\frac{V^2_2}{R_2}\)
P1R1 = P2R2
4P1 = 5P2
\(\frac{p_1}{p_2}\) = \(\frac{5}{4}\)
= 5 : 4
1.0 x 104J
8.0 x 10J
1.25 x 10J
4.0 x 10-2J
Correct answer is D
Energy = \(\frac{1}{2}\)CV2
= \(\frac{1}{2}\) x 8 x 10-6 x (100)2