Section
A
Note: Choose the
Correct answer:-
1.
The number of significant figures in 1.406
is.
(a). 4 (b). 3 (c). 2 (d). 1
2.
The SI unit of intensity of light is.
(a). N (b). K (c). Kg (d). Cd
3.
The motion
of string of violin is.
(a). Translatory (b). Vibratory (c). Rotatory (d). None
4.
Speed is a ___________ quantity.
(a). Vactor (b). Scalar (c). Both (d). None of these
5.
When horse pulls a cart, the action
is on the.
(a). Cart (b). Earth
(c). Horse (d). Earth and Cart
6.
Inertia depends upon
(a). Force (b). Net force (c). Mass (d). Speed
7.
Addition of vectors is done by.
(a). Right hand rule (b).
Left hand rule
(c). Head to tail rule (d).
Both A and B
8.
First condition of equilibrium is
represented by.
(a). 
(b). 
(c). 
(d). All of
these
9.
A satellite is revolving around the earth
in a circular orbit. If the radius of orbit is increased from R to 2R. What
will be its velocity.
(a). 
(b). 
(c). V2 (d). V/2
10. As
we go up, the value of g becomes.
(a). Unchanged (b). Increased
(c). Decreases (d). Doubled
Chapter
Physical quantities and measurement
QNo#1
Answer the following question.
I.
Differentiate between mass and weight?
II.
What are physical quantities?
III.
How derived quantities are
formed?
IV.
Why is SI units were
introduces?
V.
What do you mean by
scientific notation?
VI.
What do you meant by zero
error?
VII.
What is zero correction?
VIII.
Calculate your age by taking
present date and date of birth?
IX.
What is meant by venire constant?
X.
Why zero error is necessary
in measuring instrument?
XI.
Why do we need to measure
small interval of time?
XII.
How is precision related to
the significant figure in measured quantities?
XIII.
Why digital venire caliper
is better than mechanical venire caliper?
XIV.
Mention least counts of some
measuring instruments?
Chapter 2
Kinematics
QNO#1 Answer the following question:
I.
When the body is said to be
at rest?
II.
Name the type of motion of a
car and an aero plane in a straight line?
III.
Name the motion of rider a
ferries wheel?
IV.
What do meant by axis
rotator motion?
V.
Which is the fastest animal
in the world?
VI.
Which bird is fastest bird
on the earth?
VII.
What is meant by terminal
velocity?
VIII.
What information can we
obtained from velocity time graph?
IX.
What sign is used for “g”
for bodies moving upward?
X.
Can a body moving with
constant velocity possesses acceleration?
XI.
Does a body possesses
acceleration moving with a constant speed?
XII.
How do riders in ferries
wheel possesses translatory motion not circular motion?
XIII.
How are vector quantities
important to us in our daily life?
XIV.
The state of rest and motion
of a body value relative? Explain
Chapter 3
Dynamics
QN0#1 Answer the following question:
I.
How dynamics is different
from kinematics?
II.
What are common features in
dynamics and kinematics?
III.
Why Newton’s first law is
also known as law of inertia?
IV.
Why passengers in a moving
bus fall forward when breakers are applied?
V.
Show that Ns=kgms
VI.
Fragile objects such as
glass wares are packed with polythene sheets with air sacks. why?
VII.
Why seat belts are importance
in fast moving vehicles?
VIII.
Why friction opposes motion?
IX.
Why a moving ball stops?
X.
Why a bicycle stops when a
cyclist stop peddling?
XI.
Name factors on which the
friction depends?
XII.
What will we do to stop a
bicycle?
XIII.
Why wheels greatly reduce
friction?
XIV.
Why threading is made on the
surface of tyree?
XV.
Why and when breaking turns
into skidding?
XVI.
Why fronts of fast moving
vehicles are made streamline and oblong?
XVII.
Why outer edge of curved
roads is made higher?
Chapter 4
Turning
effect of forces
QN0#1 Answer the following question:
I. For how many forces head to tail rule can be used to get the resultant forces?
II. How couples are formed when cyclist pushes the pedal of bicycle?
III. What is trigometic ratio?
IV. Prove that FX=fcosΦ and FY=fsinΦ?
V. How do can find the magnitude and direction of any resultant force?
VI. If the perpendicular component of a force are 6N and 4N.find the magnitude and direction?
VII. Does the speed of ceiling fan go an increasing all time?
VIII. Does the fan satisfy second condition of equribilium when rotating with uniform speed?
IX. Why the vehicle is made heavy at bottom and base is wide?
X. Why a body cannot be in equilibrium due to a single force acting on it?
XI. Differentiate between torque and torque of couple?
XII. Differentiate between couple and torque?
XIII. Give an example of moving body which is in equilibrium?
Chapter 5
Gravitation
QN0#1 Answer the following question:
I.
What is the cause of weight
of object on earth?
II.
Why we don’t feel
gravitational field of object around us?
III.
What is gravitational field
strength?
IV.
How value of “g” vanes with
altitude?
V.
What is effect of g on a
point above the earth surface at a height equal to earth rations?
VI.
Does an apple attracts the
earth towards itself?
VII.
With what force an apple of
1N weight attracts the earth?
VIII.
Does the weight of an apple
increases ,decrease or remain constant when taken to the top of mountain?
IX.
On what factor value of g on
celestial object depends?
X.
What are satellites?
XI.
A satellite needs
centripetal force to move around the earth from where this force is provided?
XII.
What is the distance between
moon and earth? Also give the time period of moon during its orbital motion
around the earth?
XIII.
How satellites move around
the earth? Derive equation for its orbital speed?
XIV.
What is g stationary? Also
give its height from the surface and velocity with respect to earth.
Chapter 6
Work and
energy
QN0#1 Answer the following question:
I.
How many joules are there in
kilo joule and mega joule?
II.
Name two type of mechanical
energy?
III.
On what factors kinetic
energy of a body depends?
IV.
What is effect on kinetic
energy of a body it.
a) Mass become doubled?
b) Speed becomes doubled?
c) Mass and speed both are doubled?
V.
On what factors
gravitational potential energy depends?
VI.
How electric power is
generated in nuclear power plants?
VII.
What is meant by soil
erosion?
VIII.
What are the main sources of
energy we get from?
IX.
Name major sources of
energy?
X.
What is fossil fuel? How
they are formed and being use?
XI.
Differentiate between
renewable and non renewable source of energy?
XII.
What is meant by geo thermal
energy?
XIII.
What is meant by biomass?
Chapter 7
Properties of matter
QN0#1 Answer the following question:
I.
Define density and name its
unit?
II.
How atmosphere of earth is
formed? What is density of atmosphere?
III.
What is meant by pressure?
Name and define its units. And hence describe the factors upon which pressure
depends?
IV.
How atmospheric pressure
acts in bubble soap?
V.
When we fill air inside a
balloon , in which direction it will expands and what it conclude?
VI.
What is atmospheric pressure
at sea level? Also name the instrument used to measure atmospheric pressure.
VII.
Describe the working of
vacuum cleaner?
VIII.
An air filled balloon
immediately shoots up to surface when released under water. Why?
IX.
A mug filled with water
feels lighter under water but feels heavy as it is taken out of water?
X.
Why ships and boat float
while a small stone sinks?
XI.
Can we use the hydrometer to
measure the density of milk?
XII.
It is easy to remove air
form a balloon ,but it is very difficult to remove air form a glass bottle.
XIII.
What is a barometer?
XIV.
Why does atmospheric
pressure varies with height?
XV.
What does it means when the
atmospheric pressure at a place falls suddenly?
XVI.
What charge are expected in
whether if the barometer shows a sudden increases?
Chapter 8
Thermal properties of matter
QN0#1 Answer the following question:
I.
Differentiate between heat
and temperature?
II.
Why heat is known as energy
in transit?
III.
What is meant by interval
energy of a body?
IV.
Define thermometric
material?
V.
Define specific heat
capacity and give its unit?
VI.
Evaporation causes cooling.
Why?
VII.
Why wet clothes dry up more
quickly in summer as compare to winters?
VIII.
Why water evaporation is
faster when speed over a large surface?
IX.
Why gaps are left in railway
tracks?
X.
Why wires on electric ploes
are given some says?
XI.
What is meant by bimetal
strip? For what purpose it is used?
XII.
What is meant by anamolus
expansion of water?
Chapter 8
Thermal properties
of matter
QN0#1 Answer the following question:
I.
Define heat and mention its
unit?
II.
Why heat is important?
III.
Differentiate between good
and bad conductor?
IV.
Why Styrofoam boxes are used
to keep food hot and ice-cream cold for a long time?
V.
What is meant by rate of
flow of heat?
VI.
Why source-pans made up of
metal?
VII.
Why soft insulations boards
are used between external brick walls of a house?
VIII.
Prove that g=10n/s2?
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