Questions about Chapter 1: Measurement.

Question No: 1

A solid cylinder of radius 4 cm and the length 8 cm is made of copper. If the density of copper is 8.93 g/cm**3, the mass of the cylinder is:

A. 2.32 kg

B. 3.59 kg

C. 3.25 kgD. 5.3 kg

E. 8.94 kgQuestion No: 2

The period of a simple pendulum is given by the equation T**m = K*L(g**n), where T is in seconds, K is a dimensionless constant , L is in meters, and g is the acceleration due to gravity. If this equation is dimensionally correct, the values of m and n are:A. m = 1, n = 1

B. m =1/2, n = -1/2

C. m = 2, n = - 1

D. m = 1, n = 2E. m = 0, n = 3

Question No: 3

Newton's law of universal gravitation is given by F= G Mm/ r**2. Here F is the force of gravity, M and m are masses, and r is a length. Force has the units of kg.m/s**2. What are the SI units of the proportionality constant G.

A. m**3/(kg.s**2)

B. m**2.kg/s**2

C. m/kg**2.s**2D. m**3.s**2/kg**2

E. dimensionlessQuestion No: 4

A physical quantity called pressure, P, is defined to be the force per units area I.e. P=F/A. Find the dimension of P.

A. M.L/(T**2)

B. L/T**2C. M.T/L**2

D. L.T**2/ME. M/(L.T**2)

Question No: 5

A road sign indicates a speed limit of 100 km/h. Express this speed in m/s.

A. 30.2 m/s

B. 27.8 m/s

C. 55.1 m/sD. 10.4 m/s

E. 60 m/sQuestion No: 6

Assume that the atoms of a solid are spheres of diameter 1.0 * 10**(-10) m. Find the number of atoms in 1.0 mm**3 volume of the solid. Assume that the atoms are tightly packed.

B. 1.9 * 10**21

C. 3.0 * 10**23

D. 2.8 * 10**24

E. 5.6 * 10**24