The small droplet of water that forms on the grass in the early hours of the morning is

• A) hail
• B) dew
• C) fog
• D) mist

The velocity ratio of an inclined plane

• A. increases with increase in the angle of inclination
• B. increases with decrease in the angle of inclination
• C. decreases with decrease in the angle of inclination
• D. is independent of the angle of inclination

Two bodies X and Y are projected on the same horizontal plane, with the same initial speed but at angles 30 and 60 respectively to the horizontal. Neglecting air resistance, the ratio of the range of X to that of Y is

• A. 1:1
• B. 1:2
• C. ?3:1
• D. ?3

A transformer is rated 240v. If the primary coil is 4000 turns and the secondary voltage 12v, determine the number of turns in the secondary coil.

• A. 200
• B. 100
• C. 250
• D. 150

Which of the following radiations has it's frequency lower than that of infrared radiation?

• A. Utra-violet rays
• B. gamma rays
• C. x-rays
• D. radio waves

Which of the following factors has no effect on the e.m.f. of a primary cell?

• A. temperature
• B. size of the cell
• C. nature of the plate
• D. nature of the electrolyte

(a) Define Young's modulus

(b) When a force of 50 N is applied to the free end of an elastic cord, an extension of 4 cm is produced in the cord. Calculate the work done on the cord.

The pressure in a liquid

• A. is the same at all points in the liquid
• B. decreases with depth
• C. is the same in all directions at a given point
• D. is equal to the atmospheric pressure

A body of mass 10kg rests on a rough inclined plane whose angle of tilt ? is variable. ? is gradually increased until the body starts to slide down the plane at 30^o. The coefficient of limiting friction between the body and the plane

• A. 0.30
• B. 0.50
• C. 0.58
• D. 0.87

Which of the following statements is correct about cathode rays? They are fast moving

• A. atoms
• B. ions
• C. neutrons
• D. Electrons