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.
parallel to OX
parallel to OY
60o to OX
60v to OY
Correct answer is B
Particles of the transmitting medium in transverse wave oscillate in a direction perpendicular to the propagation of the wave
The diagram above is the heating curve for a solid, QR is the?
melting region
boiling region
sublimation region
evaporating process
Correct answer is A
At melting point there is no change temperature
275N
325N
375N
573N
Correct answer is C
VR = No. of pulleys = 4
Efficiency = \(\frac{M.A}{V.R}\)
cross multiply
\(\frac{80}{10} * V.R\) = M.A
\(\frac{80}{10} * 4\) = M.A
M.A = 3.25
where M.A = \(\frac{load}{effort}\)
∴ Effort = \(\frac{1200}{3.2} * V.R\)
= 375N
moving Q nearer to O
moving P nearer to O
addding a weight Q to Q
moving P further away from O
Correct answer is B
If 2P is added P, the beam will bend at R side. So to keep it in equilibrium. P should be moved nearer to 0
2.5 ms-1
3.0 ms-1
4.0 ms-1
4.5 ms-1
Correct answer is A
Smooth plane has negligible friction
∴ only the resultant of the perpendicular forces is acting on the body, which is given as
F =
√ 82 + 62
=
√ 64 + 36
=
√ 100
= 10N
But F = Ma
∴ a = F/M = 10/4 = 2.5 ms-1