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

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A quantity which requires magnitude and
direction to be specified is

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

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

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

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

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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

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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

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

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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

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

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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

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Heat transfer by convection in a liquid is due to
the

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

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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.

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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

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PHCN measures its electrical energy in

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

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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