## Physics Past Questions

the velocity of a 500 kg car moving long a straight road, changes from 12 m/s to 20 m/s in 5 sec. calculate the average force moving the car.
• A. 2000N
• B. 1600N
• C. 1200N
• D. 800N
Which of the following instruments has a pure tone?
• A. guitar
• B. Vibrating String
• C. Turning forks
• D. Screen
Which of the following is not a thermometer?
• A. thermocouple
• B. pyrometer
• C. hydrometer
• D. platinum resistance thermometer.
A 5kg block is released from rest on a smooth plane inclined at an angle of 30o to the horizontal. What is the acceleration down the plane? [ g = 10ms-2]
• A. 5.0 ms-2
• B. 8.7 ms-2
• C. 25.0 ms-2
• D. 5.8 ms-2
When a yellow card is observed through a blue glass, the card would appear as
• A. black
• B. green
• C. red
• D. white
An airplane increases its speed 36 km/h to 360 km/h in 20.0 s. How far does it travel while accelerating.
• A. 4.4 km
• B. 1.1 km
• C. 2.3 km
• D. 1.0 km
The energy contained in wire when it is extended by 0.02m by a force 500N is
• A. 104J
• B. 103J
• C. 10J
• D. 5J
The resistance of a wire depends on
• A. the length of the wire
• B. the diameter of the wire
• C. the temperature of the wire
• D. All of the above
A temperature scale has a lower fixed point of 40mm and an upper fixed point of 200mm. What is the reading on this scale when the temperature reads 60oc?
• A. 136.omm
• B. 33.3mm
• C. 96.0mm
• D. 36.0mm
Which of the following is not true about a chemical cell?
• A. in primary cells the process through which current is generated is irreversible
• B. secondary cells can be recharged after they run down by passing a current into the cell in the reverse direction
• C. positive ions are attracted to the positive electrode where they become neutralized by acquiring electrons
• D. primary cells can be recharged