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.
P1 > P2
P1 ≥ P2
P1 < P2
P1 = P2
Correct answer is D
As the temperature increases, the molecules in the gas move faster, impacting the gas's container more frequently and exerting a greater force. This increases the pressure. And similarly As the pressure goes up, the temperature also goes up. So the temperature and the pressure is directly proportional to each other. At a fixed point, temperature is kept constant. Hence, at this point, it can be deduced that \(P_{1} = P_{2}\)
20N
30N
40N
50N
Correct answer is C
Efficiency = M.A/V.R
75% = M.A/V.R
75/100 = M.A/5
M.A = 75(5)/100 = 3.75
But M.A = Load/Effort
3.75 = 150/Effort
Effort = 150/3.75
Effort = 40N
II and IV
I and IV
II and III
I and III
Correct answer is A
No explanation has been provided for this answer.
increase
decrease
remain the same
increase then decrease
Correct answer is B
Fresh water is less dense than the salt water, hence when the ship sails in fresh water, it will sink more, thus the fraction of the ship above the water surface will decrease.
∆x ∆Px ≥ h
∆x ∆Px = 0
∆x ∆Px < h
∆x ∆Px = ∞
Correct answer is A
No explanation has been provided for this answer.