Physics Past Questions and Answers

Which of the following statements is true of a body which is moving in a straight line with uniform acceleration? The velocity of the body

A Is also uniform
B Must always be zero when the body stops accelerating
C Will increase with time in the direction of the acceleration
D Is equal to the quotient of distance travelled and time
E Is the product of the distance travelled and time

Question 217:

A heater marked 50W will evaporate 0.005kg of boiling water in 50 seconds. The specific latent heat of vaporization of water in J/kg is

A 5.0 x 106
B 1.0 x 106
C 2.5 x 106
D 2.5 x 105
E 5.0 x 105

Question 218:

A high-resistance voltmeter reads 3.0V when connected across the terminals of a battery on open circuit and 2.6V when the battery supplies a current of 0.2A through a lamp. The resistance of lamp is

A 2.00\(\Omega\)
B 13.00\(\Omega\)
C 0.52\(\Omega\)
D 0.13\(\Omega\)
E 1.50\(\Omega\)

Question 219:

A magnetic needle is suspended first at the earth's north magnetic pole and then at a point on the magnetic equator. The respective angles between the needle and the horizontal are

A 0o and 0o
B 60o and 60o
C 90o and 90o
D 90o and 0o
E 0o and 90o

Question 220:

The equation PxVyTz = constant

A X = 0, y = 0, z = 1
B X = 1, y = 0, z = 0
C X = 1, y = 1, z = 0
D X = 1, y = 1, z = 1
E X = 1, y = 1, z = -1