The basic difference between a transverse wave and a longitudinal wave travelling in the same direction in a medium is in the
- A. amplitude of the wave
- B. wavelength of the wave
- C. direction of vibration of the particles of the medium
- D. period of vibration of the particle of the medium
The temperature of 900cm3 of an ideal gas at a pressure of 114cm Hg is 27oC. Calculate its volume at 76cm Hg and 0oC
- A. 50.0cm3
- B. 546.0cm3
- C. 659.3cm3
- D. 1228.5cm3
On a basis of the kinetic theory, an increase in the temperature of a fixed volume of an ideal gas causes
- A. a incease in the number of gas molecules
- B. a decrease in the density of the gass
- C. an increase in the average speed of the gas molecules
- D. a decrease in pressure exerted by the gas
A faulty barometer reads 72.6cm Hg when the atmospheric pressure is 75.0cm Hg. Calculate the atmospheric pressure when the barometer reads 72.0cn Hg
- A. 79.4cm Hg
- B. 74.38cm Hg
- C. 74.2cm Hg
- D. 69.4cm Hg
When a metal ball is heated through 30oC,its volume becomes 1.0018cm3. If the linear expansivity of the material of the ball is 2.0 x 10-5 K-1, calculate its original volume
- A. 1.0000cm3
- B. 1.0020cm3
- C. 1.0036cm3
- D. 1.0180cm3
On a cold day, a concrete floor feels colder to the bear foot then a mat on the same floor because the
- A. is better conductor of heat than the foot
- B. mat loses heat to the bare foot at a faster rate
- C. mat is better conductor of heat than the floor
- D. concrete floor is a better conductor of heat than the mat
Which of the following values on the absolute scale of temperature is the ice point?
- A. 0K
- B. 32K
- C. 100K
- D. 273k
When compared with water, mercury is preferred as a thermometric liquid because
- A. has a higher density
- B. has lower specific heat capacity
- C. exhibits anomalous thermal expansion
- D. contains molecules which have very strong adhesive forces
A loaded spring performs simple harmonic motion with an amplitude of 5cm. If the maximum acceleration of the load is 20cm s-1, calculate the angular frequency of the motion
- A. 2 rad s-1
- B. 4 rad s-1
- C. 5 rad s-1
- D. 10 rad s-1
A ball bearing is projected vertically upwards from the ground with a velocity of 15ms-1. Calculate the time taken by the ball to return to the ground [g = 10ms-1]
- A. 1.5s
- B. 3.0s
- C. 5.0s
- D. 7.5s
The bob of a single pendulum has a mass of 0.02kg. Determine the weight of the bob [g = 10ms-2]
- A. 0.02N
- B. 0.20N
- C. 20.00N
- D. 200.00N
A force acting on a body causes a change in the momentum of the body from 12kg ms-1 to 16kg ms-1 in 0.2s. calculate the magnitude of the force
- A. 140.0N
- B. 20.0N
- C. 4.0N
- D. 0.8N
A body of mass 8kg moving with a speed of 30ms-1 is brought to rest in 2.5s by a constant retarding force. Calculate the magnitude of the force
- A. 240N
- B. 96N
- C. 20N
- D. 9N
A body is dropped from a certain height above the ground level, falls with uniform
- A. speed
- B. velocity
- C. acceleration
- D. retardation
A body is said to be moving with uniform acceleration if it experiences equal
- A. increase in velocity at equal time intervals
- B. decreases in velocity at equal time intervals
- C. increases in speed at equal time intervals
- D. decreases in speed at equal time intervals
The speed of an object in rectilinear motion can be determine from the
- A. area under a velocity-time graph
- B. area under a distance-time graph
- C. slope of a distance-time graph
- D. slope of a velocity-time graph
A machine of velocity ratio 5 is used in lifting a load with an effort of 500N. If the machine is 80% efficient. Determine the magnitude of load
- A. 2500N
- B. 2000N
- C. 900N
- D. 625N
An elastic string of force constant 200N m-1 is stretched through 0.8m within its elastic limit. Calculate the energy stored in the string
- A. 64.0J
- B. 80.0J
- C. 128.0J
- D. 160.0J
On which of the following factor does the viscosity of a liquid depend? i. Nature of the liquid. ii. Temperature of the liquid. iii. Area of the liquid surface
- A. i and ii only
- B. ii and iii only
- C. i and iii only
- D. i, ii and iii
A steel needle floating on water, sinks when kerosine is added to the water. This is because the kerosine
- A. increased the surface tension of the water
- B. reduces the density of the water
- C. reduces the surface tension of the water
- D. reduces the upthrust on the needle
A diver is 5.2m below the surface of water of density 1000Kgm-3. If the atmospheric pressure is 1.02 x 105pa. Calculate the pressure on the diver [g = 10ms-2]
- A. 6.20 x 104 pa
- B. 1.02 x 105 pa
- C. 1.54 x 105 pa
- D. 5.20 x 105 pa