Which of the following is a wind instrument?

• A. Guitar
• B. Organ
• C. Violin
• D. Piano

The eye defect illustrated in the diagram below can be corrected by a

• A. convex mirror
• B. concave mirror
• C. diverging lens
• D. converging lens

An immersion heater rated 400W, 220V is used to heat a liquid of mass 0.5kg. If the temperature of the liquid increases uniformly at the rate of 2.5^oC per second, calculate the specific heat capacity of the liquid. [Assume no heat is lost]

• A. 1100Jkg^-1K^-1
• B. 320Jkg^-1K^-1
• C. 200Jkg^-1K^-1
• D. 176Jkg^-1K^-1

If the fraction of the atoms of a radioactive material left after 120years is 1/64, what is the half-life of the material?

• A. 24 years
• B. 20 years
• C. 10 years
• D. 2 years

A ray of light is incident normally on a plan mirror. If the incident ray is kept fixed while the mirror is rotated through an angle of 30^o, determine the initial and final angles of reflection respectively

• A. 0^o and 60^o
• B. 90^o and 30^o
• C. 0^o and 30^o
• D. 90^o and 60^o

A train with an initial velocity of 20ms^-1 is subjected to a uniform deceleration of 2m^-2. The time required to bring the train to a complete halt is?

• A. 5s
• B. 10s
• C. 20s
• D. 40s

The bob of a simple pendulum takes 0.25s to swing from its equilibrium position to one extreme end. Calculate its period

• A. 0.25s
• B. 0.50s
• C. 0.75s
• D. 1.00s

Which of the following statements distinguishes thermal conduction for convection? i. Conduction requires a material medium while convection does not ii. In convection, there is actual motion of hot material, while in conduction, molecules molecules vibrates faster about their mean positions iii. Conduction takes place in solids while convection takes place in fluids.

• A. i and ii only
• B. ii and iii only
• C. i and iii only
• D. i, ii and iii

A particle of charge q and mass m moving with a velocity v enters a uniform magnetic field b in the direction of the field. The force on the particle is

• A. qvB
• B. mqvB/m
• C. mvB/q
• D. O

Which of the following type of motion does a body undergo when acted upon by a couple?V

• A. vibrational
• B. translational
• C. rotational
• D. random