The limiting frictional force between two surface depends on

I. the normal reaction between the surfaces

II. the area of surface in contact

III. the relative velocity between the surfaces

IV. the nature of the surface

If a body moves with a constant speed and at the same time
undergoes an acceleration, its motion is said to be

When blue and green colours of light are mixed, the resultant
colour is

According to kinetic molecular model, in gases

The value of T in the figure above is

A train has an initial velocity of 44m/s and an acceleration of
-4m/s . Calculate its velocity after 10 seconds

Lamps in domestic lightings are usually in

During the transformation of matter from the solid to the liquid
state, the heat supplied does not produce temperature
increase because

In a slide wire bridge, the balance is obtained at a point 25cm
from one end of wire 1m long. The resistance to be tested is
connected to that end and a standard resistance of 3.6 is
connected to the other end of the wire. Determine the value of
the unknown resistance

Electrons were discovered by

Which of the following is/are the limitations to the Rutherford’s
atomic models?

I. It is applicable when energy is radiated as electrons are
revolving

II. It is applicable when energy is radiated in a continuous
mode

III. It is applicable to an atom with only one electron in the
other shell

Which of the following equations is the correct definition of the
reactance of an indicator L?

Which of the following is/are the limitations to the Rutherford’s
atomic models?

I. It is applicable when energy is radiated as electrons are
revolving

II. It is applicable when energy is radiated in a continuous
mode

III. It is applicable to an atom with only one electron in the
other shell

Ripple in a power supply unit is caused by

When the temperature of a liquid is increased, its surface
tension

The distance between an object and its real image in a convex
lens is 40cm. If the magnification of the image is 3, calculate
the focal length of the lens

A ray of light passes through the centre of curvature of a
concave mirror and strikes the mirror. At what angle is the ray
reflected?

The pin-hole camera produces a less sharply defined image
when the

A straight wire 15cm long, carrying a current of 6.0A is in a
uniform field of 0.40T. What is the force on the wire when it is
at right angle to the field

The pitch of a screw jack is 0.45cm and the arm is 60cm long.
If the efficiency of the Jack is 75/π %, calculate the mechanical
advantage.

When the downward current flows in a straight vertical
conductor, the direction of its magnetic field at a point due
north of the wire is

Aluminium is sometimes used as the leaf of an electroscope
because it

A supply of 400V is connected across capacitors of 3μf and
6μf in series. Calculate the charge

A vibrator causes water ripples to travel across the surface of a
tank. The wave travels 50cm in 20s and the distance between
successive crests is 5cm. Calculate the frequency of the
vibrator

A thermocouple thermometer is connected to a millivoltmeter
which can read up to 10mV. When one junction is in ice at 0°C
and the other is steam at 100°C, the millivoltmeter reads 4mV.
What is the maximum temperature which this arrangement can
measure

An alternating current can induce voltage because it has

The limiting frictional force between two surfaces depends on
I. the normal reaction between the surfaces
II. the area of surface in contact
III. the relative velocity between the surfaces
IV. the nature of the surfaces

During the transformation of matter from the solid to the liquid
state, the heat supplied does not produce a temperature
increase because

The statement ‘Heat lost by the hot body equals that gained by
the cold one’ is assumed when determining specific that heat
capacity by the method of mixtures. Which of the following
validates the assumption?
I. Lagging the Calorimeter
II. Ensuring that only S.I units are used
III. Weighing the calorimeter, the lid and the stirrer.

In the molecular explanation of conduction, heat is transferred
by the

The conductivity of gases at low pressure can be termed as
I. hot cathode emission
II. thermo ionic emission
III. cold cathode emission
IV. Field emission

Which of the following media allow the transmission of sound
waves through them?
I. air
II. liquid
III. solids

The following are parts of the eye
I. Retina
II. Pupil
III. Iris
The correct equivalent in the camera in the same order are

According to kinetic molecular model, in gases

The momentum of a car moving at a constant speed in a
circular track

The lead-acid accumulator consists of

When water is boiling, it

A mixture of blue and red pigment when illuminated by white
light will appear

A man on a bench will exert the greatest pressure on the
bench when he

Gases conduct electricity under

Neutrons were discovered by

The mass of a nucleus is the

Three resistors with resistance 200Ω, 500Ω and 1kΩ are
connected in series. A 6v battery is connected to either end of
the combination. Calculate the potential difference between the
ends of 200Ω resistance.

An a.c of 1A at a frequency of 800 cycles per second flows
through a coil, the inductance of which is 2.5mH and the
resistance of which is 5Ω. What is the power absorbed in the
Coil?

In semi-conductor, the carriers of current at room temperature
are

When a girl moves towards a plane mirror at a speed of
4.0m/s, the distance between the girl & her image reduces a
speed of

One newton × one meter is equal to ___

A microscope is focused on a mark on a table, when the mark
is covered by a plate of glass 2m thick, the microscope has to
be raised 0.67cm for the mark to be once more in focus.
Calculate the refractive index.

What is the least possible error encountered
when taking measurement with a meter rule?

Please like our facebook page here

A quantity which requires magnitude and
direction to be specified is

Please like our facebook page here

I Electrical potential, II Torque, III Kinetic
Energy, IV Momentum. Which of the quantities
listed are vectors?

Please like our facebook page here

Which type of motion do the wheels of a moving
car undergo?

Please like our facebook page here

A car accelerates uniformly from rest at 3ms-2
.
its velocity after traveling a distance of 24m is

Please like our facebook page here

Calculate the escape velocity of a satellite
launched from the earth’s surface if the radius of the
earth is 6.4x106m

Please like our facebook page here

An object of weight 80kg on earth is taken to a
planet where acceleration due to gravity is one-third
of its value on earth. The weight of the object on the
planet is

Please like our facebook page here

One of the conditions necessary for an object to
be in equilibrium when acted upon by a number of
parallel forces is that the vector sum of the forces is

Please like our facebook page here

What happens when three coplanar non-parallel
forces are in equilibrium?

Please like our facebook page here

An object of mass 20kg is released from a height
of 10m above the ground level. The kinetic energy of
the object just before it hits the ground is

Please like our facebook page here

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

Please like our facebook page here

A machine whose efficiency is 75% is used to
lift a load of 1000N. Calculate the effort put in to the
machine if it has a Velocity ratio of 4.

A force of 500N1
is applied to a steel wire of
cross-sectional area 0.2m²
, The tensile stress is

The small droplets of water that form on the
grass in the early hours of the morning is

What is the equivalent of 20K in Celsius scale?

The equation PaVbT
c= constant reduces to
Charles Law if

The quantity of heat needed to raise the
temperature of a body by 1K is the body’s

The melting point of a substance is equivalent to
its

The temperature at which the water vapour
present in the air is just sufficient to saturate air is

Please like our facebook page here

Heat transfer by convection in a liquid is due to
the

Please like our facebook page here

The distance between two successive crests of a
wave is 15cm and the velocity 300ms-1
. Calculate the
frequency.

Please like our facebook page here

A boy receives the echo of his clap reflected by a
nearby hill 0.8s later. How far is he from the hill?

An object is placed 10m from a pinhole camera
of length 25cm. Calculate the linear magnification.

Please like our facebook page here

The focal length of a concave mirror is 2.0cm. If
an object is placed 8.0cm from it, the image is at

In a compound microscope, the objective and the
eye piece focal lengths are

When a telescope is in normal use, the final
image is at

When a negatively charged rod is brought near
the cap of a charged gold leaf electroscope which has
positive charges, the leaf

What charge is stored in a 0.1F capacitor when a
10V supply is connected across it?

The maximum power transfer occur in a cell
when the external resistance is

If a metal wire 4m long and cross-sectional area
0.8 mm^2
has a resistance of 60, find the resistivity of
the wire

A circuit has a resistance of 200Ω. The
resistance of the circuit can be reduced to 120Ω when

Please like our facebook page here

PHCN measures its electrical energy in

What is the best method of demagnetizing a steel
bar magnet?

Please like our facebook page here

The magnitude of the angle of dip at the equator
is

When an atom undergoes a beta decay, the
atomic number of the nucleus

Calculate the mass of the copper deposited
during electrolysis when a current of 4A passes
through a copper salt for 2 hours. [Ece of Copper
z=3.3×10-7kgC-1
]

Which gas produces a pink coloured light in a
discharge tube?

In a common emitter configuration, the output
voltage is through the

A glass bottle of initial volume 2 x 104
cm3
is
heated from 20oC to 50oC. If the linear expansivity
of glass is 9 x 106K-1
, the volume of the bottle at
50^oC is