Physics Past Questions and Answers

A metal ball of weight W falls through a column of glycerine of viscosity V. If the ball experiences an upthrust U and terminal velocity is attained, then

A W > U + V
B W = U + V
C W = U - V
D W < U + V

Question 1467:

The movement of fluid up or down a narrow tube is

A Osmosis
B Brownian motion
C Capillarity
D Diffusion

Question 1468:

Which of the following substances is the most volatile at room temperature?

A Water
B Diesel
C Petrol
D Kerosine

Question 1469:

A bird flies at 10ms\(^{-1}\) for 3s, 15ms\(^{-1}\) for 3s and 20 ms\(^{-1}\) for 4s. Calculate the bird's average speed

A 4.5 ms^-1
B 15.0 ms^-1
C 15.5 ms^-1
D 51.7 ms^-1

Question 1470:

The time of flight for a projectile motion is given by the expression

A \(\frac{U sin \theta}{g}\)
B \(\frac{U sin \theta}{2g}\)
C \(\frac{2U sin \theta}{g}\)
D \(\frac{U sin 2\theta}{g}\)