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
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.
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.