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.
10.0Ω
7.5Ω
5.0Ω
2.5Ω
Correct answer is D
From Ohms Law, E = I(R +X)
=> E = I1(R1 + X)
again, E = I2(R2 + X)
=> I1(R1 + X) = I2(R2 + X)
∴ 5(8 + X) = 7(5 + X)
40 + 5X = 35 + 7X
7X - 5X = 40 - 35
2X = 5
X = 5/2
= 2.5Ω
North - North
North - South
South - North
South - South
Correct answer is B
No explanation has been provided for this answer.
The diagram above shows the prism arrangement in a
binocular
spectrometer
periscope
projector
Correct answer is C
No explanation has been provided for this answer.
15 cm3
25 cm3
35 cm3
45 cm3
Correct answer is B
Since the temperature of the air is to remain Constant => P1V1 = P2V2
∴ 75 x 30 = (75 + 15) x V2
75 x 30 = 90 x V2
| => V2 = | 75 x 30 |
| _90 |
| = | 2250 |
| _90 |
= 25cm2
The diagram above shows a lift pump with valves at P and Q. During a downward stroke of the piston
both valves are open
P is open while Q is closed
P is closed while Q is open
Both valves are closed
Correct answer is B
No explanation has been provided for this answer.