The diagram below is the heating curve for a solid QR is the

• A) melting region
• B) boiling region
• C) sublimation region
• D) evaporating process

The diagram given, represents the graph of stress against strain for an elastic wire. The point Q on the graph is the

• A. elastic limit
• B. breaking point
• C. yield point
• D. proportional limit

What is the resultant resistance of the circuit in the image shown?

• A. 8Ω
• B. 11Ω
• C. 4Ω
• D. 3.6Ω

During a training session, two footballers pass a ball repeatedly between each other. The 'to and fro' motion of the ball is not simple harmonic because the I. Acceleration of the ball is not directed towards a fixed point II. Restoring force is not directed towards the centre III. Acceleration of the ball is not directly proportional to the displacement from a fixed point Which of the statements above are correct?

• A. I and III only
• B. I and II only
• C. II and III only
• D. I, II and III

A charge of 10 C is transferred across a potential difference of 220 V. Determine the work done.

• A. 22J
• B. 2200J
• C. 210J
• D. 230J

The ratio of maximum range to maximum height of a projectile is 4. Determine the angle of projection.

• A. \(30^0\)
• B. \(60^0\)
• C. \(45^0\)
• D. \(0^0\)

The property of a body to remain at rest or to continue in uniform motion in a straight line is called

• A. momentum
• B. Inertia
• C. impulse
• D. Energy

Which of the following can be used to reduce local action in a Laclanche cell?

• A. A carbon rod as the positive pole
• B. Pure zinc as the negative pole
• C. Potassium permanganate solution in contact with the positive pole
• D. common salt solution

The energy in the nucleus of atoms produce heat which can be used to generate

• A. Kinetic energy
• B. Mechanical energy
• C. Electrical energy
• D. Potential energy

Sound interference is necessary to produce the phenomenon of

• A. beats
• B. doppler effect
• C. acoustic resonance
• D. echo