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1
Under which conditions is work done
- A. A man supports a heavy load on his head with hands.
- B. A woman holds a pot of water
- C. A boy climbs onto a table
- D. A man pushes against a stationary petrol tanker
The mechanical advantage of the machine shown above
- A. 7.5
- B. 15.5
- C. 30.0
- D. 60.0
3
Rainbow is formed when sunlight undergoes
- A. reflection
- B. refraction
- C. dispersion
- D. diffraction
Find the value of a capacitor with voltage 5V and 30C.
- A. 7f
- B. 6f
- C. 15f
- D. 0.17f
The friction due to air mass can be reduced by
- A. streaming
- B. lubricating
- C. propeller
- D. polishing
Which of the following operates based on magnetic effect of electric current?
- A. electric heater
- B. photocell
- C. Dynamo
- D. Cold cathode
7
When a charged ebonite rod is brought near a charged glass rod, there will be
- A. attraction
- B. repulsion
- C. spark
- D. no force experienced
Pilots uses aneroid barometer to know the height above sea level because
- A. Very accurate
- B. Small and convenient
- C. Heavy and huge
- D. Costly
A light ray passing from air into water at an angle of 30º from the normal in air would
- A. make an angle greater than 30
- in water surface
- B. be completely absorbed by the water surface
- C. be completely reflected by the water surface
- D. make an angle less than 30
- from the normal in water
A solid cube of aluminum is 1.5cm on each edge. The density of aluminum is 2700kgm
. Find the mass of the cube.
- A. 7.5g
- B. 9.1g
- C. 12.0g
- D. 15.0g
The value of R required to make the galvanometer measure voltage up to 40V in the diagram above
- A. 1885 Ω
- B. 1990Ω
- C. 1995Ω
- D. 1100Ω
If the S.V.P of water vapour was 13.5mmHg at 33ºC and 7.3mmHg at 7ºC. Find the percentage relative of the air on a day when average air temperature was 33ºC and dew point was 7ºC.
- A. 55%
- B. 60%
- C. 54%
- D. 51%
13
Electrolysis can be investigated using
- A. Voltmeter
- B. Ammeter
- C. Galvanometer
- D. Voltameter
A wheelbarrow inclined at 60º to the horizontal is pushed with a force of 150N. What is the horizontal component of the applied force
- A. 130N
- B. 75N
- C. 60N
- D. 50N
In a solar panel, solar beam is concentrated by using
- A. Concave mirror
- B. Convex mirror
- C. Plane mirror
- D. Triangular mirror
A rectifier is a device that changes
- A. D.C to D.C
- B. D.C to A.C
- C. A.C to A.C
- D. A.C to D.C
17
The moon’s acceleration due to gravity is 1/6 of the earth’s value. The weight of a bowling ball on the moon would be
- A. 6 times its weight on the earth
- B. of its weight on the earth
- C. 36 times its weight on the earth
- D. equal to its weight on the earth
If a sheet of an insulating material is inserted between the plates of an air capacitor, the capacitance will
- A. become zero
- B. decrease
- C. increase
- D. remain unchanged
A sonometer’s fundamental note is 50Hz, what is the new frequency when the tension is four times the original?
- A. 25Hz
- B. 100Hz
- C. 200Hz
- D. 250Hz
Which of the following is not a part of model rocket?
- A. The body tube
- B. The nose cones
- C. The fin
- D. Not recovery devices
A mass of gas at 40mmHg is heated from 298k to 348k at constant volume. Cal the pressure exerted by the gas.
- A. 50.21mmHg
- B. 46.71mmHg
- C. 42.35mmHg
- D. 35.12mmHg
22
The thermometer whose thermometric property is change in volume with temperature is
- A. Resistance thermometer
- B. Thermocouple
- C. Bimetallic thermometer
- D. Liquid-in-glass thethermometer
23
In a series resonant circuit, the current flowing in the circuit is
- A. maximum
- B. minimum
- C. zero
- D. unaffected
If a body in linear motion changes from point P to Q, the motion is
- A. Translational
- B. Rotational
- C. Simple harmonic
- D. Circular
25
Which of these gas laws is equivalent to workdone
- A. Charle’s law
- B. Pressure law
- C. Boyle’s law
- D. Gay Lussac’s law
The process of adding impurities to a semiconductor material to increase its conductivity is
- A. Rectification
- B. Emission
- C. Doping
- D. Stabilization
27
Which of the following is the best as shaving mirror?
- A. Concave mirror
- B. Convex mirror
- C. plane mirror
- D. parabolic mirror
A refrigerator uses 150W. If it is kept on for 336 hours non-stop, what is the energy consumed in KWh?
- A. 60.20KWh
- B. 50.40KWh
- C. 25.01KWh
- D. 30.20KWh
What is the inductance reactance of a coil of 7H when connected to a 50Hz a.c circuit?
- A. 2200 Ω
- B. 2000 Ω
- C. 1200 Ω
- D. 1100 Ω
30
In electrolysis, when same quantity of electricity is passed through different electrolytes, mass of substances deposited is proportional to
- A. Molecular weight
- B. Chemical equivalent
- C. Atomic number
- D. Chemical equivalent per valency
31
The degree of precision of a vernier caliper is
- A. 0.005cm
- B. 0.01cm
- C. 0.1cm
- D. 1.0cm
According to kinetic theory of gases, the pressure exerted by the gas on the wall is equal
- A. change in momentum per unit volume
- B. rate of change of momentum imparted by the walls per second per unit area
- C. momentum imparted to the walls per unit area
- D. change in momentum imparted to the walls per unit area
33
The property by which a material returns to its original shape after the removal of force is called
- A. Elasticity
- B. Ductility
- C. Malleability
- D. Plasticity
The energy in a moving car is an example of
- A. Mechanical energy
- B. Electrical energy
- C. Potential energy
- D. Kinetic energy
35
What is the least possible error encountered when taking measurement with a metre rule?
- A. 1.1mm
- B. 0.5mm
- C. 0.2mm
- D. 0.1mm
36
At absolute zero temperature, the average velocity of the molecules
- A. Decreases
- B. Increases
- C. Is zero
- D. Is uncertain
Calculate the quantity of heat for copper rod whose thermal capacity is 400Jk for a temperature change of 60ºC to 80ºC
- A. 2KJ
- B. 4KJ
- C. 6KJ
- D. 8KJ
Using the diagram above, the effective force pushing it forward at an angle 60º is
- A. 25.00N
- B. 28.87N
- C. 38.50N
- D. 443.30N
39
The gravitational force between two objects is 10N, what is the new value of the force if the distance between them is halved?
- A. 10N
- B. 20N
- C. 40N
- D. 80N
40
An ideal transformer has
- A. Maximum primary resistance
- B. No flux leakage
- C. Hysteresis
- D. Eddy current
Calculate the depth of a swimming pool if the apparent depth is 10cm. ( Refractive index of water = 1.33 )
- A. 7.5cm
- B. 10.0cm
- C. 13.3cm
- D. 6.87cm
42
The tangential force acting on an object that opposes it from sliding freely on the adjacent surface is called
- A. Normal force
- B. Friction force
- C. Weight
- D. Upthrust
43
Two tuning forks of frequencies 6Hz and 4Hz respectively are sounded together. The beat frequency is
- A. 2Hz
- B. 5Hz
- C. 8Hz
- D. 10Hz
The capacitance of a capacitor, C, is inversely proportional to
- A. area of the plate
- B. dielectric substance
- C. distance between plate
- D. direction of the plate
45
An object is placed 25cm in front of a convex mirror has its image formed 5cm behind the mirror. what is the focal length of the convex mirror
- A. 8.20cm
- B. 6.25cm
- C. 5.60cm
- D. 4.50cm
In a Hare’s apparatus, the height of water and a liquid X are 0.3m and 0.5m respectively. The relative density of x is?
- A. 0.4
- B. 0.6
- C. 1.7
- D. 2.0
47
The land and sea breeze is attributed to
- A. conduction and radiation
- B. conduction
- C. radiation
- D. convection
A practical application of total internal reflection is found in
- A. rainbow
- B. diverging lens
- C. converging lens
- D. fiber optics
49
A body is pulled on a horizontal surface with a rope inclined at 30º to the vertical. If the effective force pulling the body along the horizontal surface is 15N, calculate the tension on the rope.
- A. 30N
- B. 60N
- C. 22.5N
- D. 75N
50
Using the diagram above, calculate the relative density of x, if the density of methanol is 800kgm -3
- A. 0.8
- B. 0.5
- C. 1.5
- D. 2.5
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