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.
The solid will fall over if the vertical line through G lies outside the base
The solid will fall over if the vertical line through lies inside the base
The solid will not fall over if the vertical line through G lies outside the base
The solid can never fall over
Correct answer is A
The solid will fall over if when the vertical line through G lies outside the base, when slightly tilted
Vibration in a stretched spring cannot be polarized because they are
stationary waves
transverse waves
longitudinal waves
mechanical waves
Correct answer is C
In longitudinal waves, such as sound waves in a liquid or gas, the displacement of the particles in the oscillation is always in the direction of propagation, so these waves do not exhibit polarization.
the pressure of 3 moles of an ideal gas at a temperature of 27°C having a volume of 10-3m3 is
2.49 x 105-2
7.47 x 105-2
2.49 x 106-2
7.47 x 106-2
Correct answer is D
From the relation PV = nRT
V = 10-33; n = 3 moles; T = 27 + 273 = 300k
R = 8.3 j mol-1 K-1
=> P = nRT/V = 3 X 8.3 X 300/10-3 = 7.47 X 106 Nm-2