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.
5.0g
12.0g
20.0g
25.0g
Correct answer is C
R.D = \(\frac{\text{ mass of liquid displaced}}{\text {mass of water displaced}}\)
2 = \(\frac{m - 10}{m - 15}\)
m = 20g
15.0cm
17.0cm
20.0cm
23.0cm
Correct answer is D
let the length be Lcm
\(\frac{5 - 3}{25 - L}\) = \(\frac{10 - 5}{30 - 25}\)
L = 23cm
13.3N
73.5N
133.3N
53.2N
Correct answer is C
Efficiency = m.A x \(\frac{1}{V.R}\) X 100%
75 = \(\frac{20 \times 10}{effort}\) x \(\frac{1}{\frac{g}{sin\theta}}\) x 100%
Effort = 133.3N
8.0N
6.8N
8160N
9600N
Correct answer is C
Efficiency = m.A x \(\frac{1}{V.R}\) x 100%
85 = \(\frac{load}{1200}\) x \(\frac{10}{80}\) x \(\frac{100}{1}\)
load = 8160N
1.9J
2.8J
3.45J
0.43J
Correct answer is A
P.E = \(\frac{1}{2}\)Fe
= \(\frac{1}{2}\)\(\frac{F}{K}\)
= \(\frac{1}{2}\) x \(\frac{75 \times 75}{1500}\)
= 1.9J