64
An object is said to undergo oscillatory motion when it moves
- A. in an erratic manner
- B. to and fro about a fixed point
- C. in a circular path
- D. along a continuous path from the starting point
65
A solid body will float in a liquid if its
- A. density is less than that of a liquid
- B. mass is equal to that of the liquid
- C. density is greater than that of the liquid
- D. mass is less than that of the liquid
66
A block of volume 3 x 105m3 and density 2.5 x 103 kg m-3 is suspended from a spring balance with \(\frac{2}{3}\) of its volume immersed in a liquid of density 900 kg m-3. Determine the reading of the spring balance [g = 10ms-2]
- A. 0.18N
- B. 0.57N
- C. 0.75n
- D. 0.93N
67
Which of the following physical quantities are derived? i. Area ii. Thrust iii. Pressure iv. Mass
- A. i, ii, iii and iv
- B. i, ii and iii only
- C. i, ii and iv only
- D. i and iii only
68
Which of the following phenomena causes capillary of liquids in tubes of narrow bore?
- A. viscosity
- B. surface tension
- C. osmosis
- D. brownian motion