Physics Exammination Question

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Sometimes it seems tough sitting down after long day stress to effectively
come out  with a outstanding and eye catching Questions in a well
define physics examination for senior school students. Notwithstanding the
blockade that engulfs it positivity, Physics is a technical domain is
physical sciences and caution must be taken when preparing questions for a
set of students.


Below are well define questions for senior secondary school
three, preparing for foreign and mock examinations.
1.     A p-n junction diode is used as   A.
a rectifier in a d.c circuit B. an amplifier in an a.c circuit C a rectifier
in an a.c circuit. D a valve in an   a.c circuit
2.    Which of the following is best used
for the determination of the diameter of a thin constantan wire? Calipers. B
Meter rule. C Micrometer screw gauge. D Vernier calipers
3.    A simple harmonic oscillator has a
period of 0.02s and amplitude of 0.25 m. Calculate the speed in m/s at the
center of the oscillation A. 1.25 B. 25 C. 100 D. 100 E. 400
4.    A body is projected horizontally from
the top of  a cliff 45m above the ground. If the body lands at a
distance of 30m from the foot of the cliff, calculate the speed of the
projection A.10m/s B. 15m/s C. 20m/s D. 30m/s
5.    Capacitors  are used in the
following devices except A. celing fans B. Water pumping machines C. electric
irons D. television sets
6.    The following devices uses plane plane
mirrors in their operations except A. periscope B.sextant C. kaleidoscope D.
binoculars
7.    Neutrons are used to induce artificial
radioactivity because they  A. are ionizing B. are energetic C.
have no charge D. have no mass
8.    The battery connection that permits
current to flow across a p-n junction is called.  A amplification
B. rectification C forward biased D reverse biased.
9.    The process through which free
electrons leave the surface of hot metals is known as A. thermionic emission
B. photo emission C. photon emission D. electron emission.
10.  The motion of smoke particles from a chimney is
typical of A.  Oscillatory motion B rotational motion C. circular
motion D. random motion.
11.  The component of vector X along the direction of
vector Y is zero when  A. X is at an angle of 45o to Y  B.
X and Y are in opposite directions to each other  C. X and Y are
parallel to each other  D. X is perpendicular to Y
12.  An engine of a car of power 80kW moves on a rough
road with a velocity of 32ms-1. The force required to bring it to rest is
A.2.5 x 106N B. 2.50 x 103N C. 2.58 x106N D 2.80x 103N
13.  A shooter wants to fire a bullet in such way that
its horizontal range is equal to three times its maximum height. At what
angle should he fire the bullet to achieve this ? A. 53o B. 68o C 30o D 45o.
14.  The correct unit of energy density is A. kgm-3s-2
B. kgm-1s-2 C. kgm3s-2 D. kgm2s-2.
15.  The main purpose of transformer in an a.c radio
set is to A. increase power to the radio B. convert energy from a.c to d.c C.
step down the voltage D. step up the voltage.
16.  An electric heater with a p.d of 240V connected
across its terminal has a total resistance of 960. Find the power rating of
the heater. A 4.00W B 0.25W C 60.00W D 38.40W
17.  Non-luminous object can be seen because they A.
are polished B. are near  C. reflect light D. emit light.
18.  Speed is the rate of A. change of velocity with
respect to time taken  B. change of displacement with respect to
velocity  C. change of distance with time  D. change of
distance with respect to displacement
19.  A submarine is observed to rise from a real depth
of 80m to 60m in water. Calculate the change in apparent depth. A 60m B. 15m
C. 80m D 45m
20. The thermos flask is designed to A. prevent heat gain
by conduction, convection and radiation Prevent heat loss by conduction,
convection and radiation. C prevents heat loss or gain by conduction,
convection and radiation. D. store hot tea or
water.     
21.  The thermometric property of a constant volume
thermometer is A. change in pressure B. change in length C. differential
expansion D. change in volume.
22. The bond that forms a semiconductor is   A.
covalent B. electrovalent C. ionic D. metallic
23. Which of the following observations is NOT an effect of
surface tension?
A.   Droplets of water dripping slowly from a tap
B.    Mercury spilled on a clean glass plate
forms small spherical droplets
C.    An insect walking across the surface
of a pond
D.   Water flowing out more easily than engine
oil from a container
24. Which of the following physical quantities is correctly
paired with its corresponding S.I unit?
A. Density [ kg m3]    B. Power [ J /s
]     C. Specific latent heat [ J/kg/K ]   D.
Pressure [ N/m]
Which of the following statements about solid friction are
correct? It
I.            is
a force.
II.          Occurs
between the surfaces of two bodies in contact.
III.       Depends on the
area of contact.
A. I and II only        B.
I and III only       C. II and III
only       D.  I, II and III
               25.   A
body moving at a constant speed accelerates when it is in
A. rectilinear motion    B. translational
motion   C. circular motion      D.
vibrational motion
26. A body accelerates uniformly from rest at 2 m/s2. Calculate
the magnitude of its velocity   after traveling 9m.
A. 4.5
m/s                      B.
6.0
m/s                  C.
18.0
m/s                  D.
36.0 m/s
27.A swinging pendulum between the rest position and its maximum
displacement possesses kinetic energy only B. potential energy only C.
gravitational energy only D. both kinetic and   Potential
energy.
28.An external force of magnitude 100 N acts on a particle of
mass 0.15 kg for 0.03 s. Calculate the change in the speed of the particle.
A. 50
m/s                        B.
25 m/s                       C.
20
m/s                           D.
5m/s
29. A car of mass 800kg moves from rest on a horizontal track
and travels 60m in 20s with uniform acceleration. Assuming there were no
frictional forces, calculate the accelerating force.
A. 240.00
N                 B.
800.00 N            C.
1600.00
N                   D.
2400.00N
30. The ice and steam points on a mercury-in-glass thermometer
are 10 cm and 30 cm respectively. Calculate the temperature in degree
Celsius, when the mercury meniscus is at the 14 cm mark.
A.
20oc                 B.
300c                    C.
340c                     D.
700c
31. Which of the following surface will radiate heat energy
best?
A. Red surface       B. White
surface          C. Black
surface                D.
Yellow surface
32. A body of mass 200g and specific heat capacity 0.4J/g/K
cools from 370c to 31oc.Calculate the quantity of heat
released by the body.
a.    A.
4800J                 B.
1200J                         C.
480J                          D.
202J
33. According to the kinetic theory of gases, which of the
following properties of a gas can be affected by the collision of the gas
molecules with the walls of its container?
A. Temperature        B.
Energy               C.
Viscosity                     D.
Pressure
34 Which of the following waves is electromagnetic?
A.
X-rays                    B.
Sound
waves              C.
Water
waves                      D.
Tidal waves
35. Which of the following factors can affect the speed of sound
in air?
                                                                  i.    The
temperature of the surrounding
                                                                ii.    The
direction of wind
                                                               iii.    The
pitch of the sound
A. I and II
only              B.
II and III only                C.
I and III only   D. I, II and III
36. Which of the following statements about sound waves is NOT
correct? Sound waves can be   A.
reflected.                B.
refracted.                     C.
diffracted                     D.
polarized.
33. The following are scalar quantities except A. Distance B.
Speed C. Velocity D. mass
37. Dew point is not affected by A. Wind B. The amount of water
vapor in air C. temperature D. atmospheric pressure
38.  A thermometer records 680 mmHg at a steam point
and 440 at ice point. The temperature it records at 380mmHg is A. -25oc
B. -20Oc C. 20oC D. 25oC
39. The ability of a wave to spread through round corners is
called A. polarization B. dispersion C. Diffraction D. reflection
40. The volume of a given mass of gas is inversely proportional
to the applied pressure at constant temperature is illustrated by A. Charles
law B. boyles’ law C. boyle’s law D. charle’s law
            
 SECTION B
THEORY
(60 Marks)
Answer seven questions in all.
Five questions from Part I and two questions from Part II
All questions carry equal marks.
PART I
(Answer any five questions from this part
1.     A stone is projected upward with
a speed of 30m/s from the top of a tower of height 50m, Neglecting air
resistance, Determine the maximum height it reached from the ground
2. A particle is projected at an angle of 300 to the horizontal
with a speed of 250m/s. Calculate t
    (a) total time of flight of the
particle;
    (b) speed of the particle at its maximum
height.                              [g
= 10m/s2     
3. A stone projected horizontally from the top of a tower with a
speed of 4m/s lands on the level
    ground at a horizontal distance 25m from
the foot of the tower. Calculate the height of the
tower.            [g
= 10m/s2]
4. State  (a) the difference between plane polarized
light and ordinary light;
            (b)
Two uses of Polaroids.
5. Define (a) electrolysis (b) electrolyte (c ) electrode.
6. (a) Explain thermionic emission.
    (b) State two applications of electrical
conduction through gases.
7. State two factors which affect the mass of element deposited
during electrolysis
b. list two examples of non-electrolytes
8. Differentiate between plain polarization and interference as
applied to polaroids
9. (a) List two factors that can affect the rate of diffusion.
    (b) State two examples to illustrate the
effects of surface tension.
10. List two examples each of a substance with  (i)
low viscosity (ii)high viscosity
b. When is a liquid said to be viscostatic
PART II
Answer any two questions from this part
11. Distinguish between perfectly elastic collusion and
perfectly inelastic collusion (b)  Sketch a distance time graph for
a particle moving in a straight line  with (i)uniform speed
(ii)variable speed       [8 marks]
  (c) A body starts from rest and travels with a
distance of 120, 300 and 180m in successive time interval of 12s. During each
interval the body uniformly accelerated (i) Calculate the velocity of the
body at the end of each successive time interval (ii0sketch a velocity -time
graph for the motion
 [ 7 marks ]
12. (a) Define the boiling point of a
liquid.                                                                      [
2 marks ]
      (b) With the aid of a sketch
diagram, describe an experiment to determine the boiling
     point of a small quantity of a
liquid.                                                                     [
8 marks ]
  (c ) A piece of copper of mass 300g at a temperature
of 9500c is quickly transferred in     a vessel of
negligible thermal capacity containing 250g of water at 250c. If the final
steady
 temperature of the mixture is 1000c, calculate the mass of
water that will boil away.
             [Specific
heat capacity of copper = 4.0 x 102 J/kg/K]
             [   Specific
heat capacity of water = 4.2 x 103 J/kg/K]
           [specific
latent heat of vaporization of steam = 2.26 x 106 J/kg
]               [5
marks
13. Explain the terms  (i)inertia (ii)initial mass
(iii) satellite (iv) Rockets
(b) State three factors which affect the rate of evaporation of
water from a pond
c) Two ice cubes pressed together for some times were found to
stick together when the pressure was removed. Explain this observation
 (d) The force applied to a material is 45N, if it produces
an extension of 5m determine the stiffness of the wire, if an additional
force of 8N is further applied determine it new extension.

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