11th CLASS
PAPER Fsc PART 1(FULL BOOK)
SUBJECTIVE PART
TIME: 3:10 hours
Write answer of any EIGHT questions.
(8*2=16)
i.
What do you know about international system of units? Describe its
significance?
ii.
What types of errors are possible in measuring the time period of
pendulum by stop watch?
iii.
Write down the dimensions of velocity, acceleration and force?
iv.
Give the drawbacks
to use the period of a pendulum as a time standard?
v.
Discuss the different cases of multiplication of a vector by a scalar
(number).
vi.
State the complete requirement for a body to be in equilibrium?
vii.
Can you add zero
to a null vector?
viii.
Describe the Newton’s second law of motion in terms of momentum.
ix.
Show that impulse of a force is equal to the change in linear momentum.
x.
Motion with constant velocity is a special case of motion with constant
acceleration. Is this statement is true? Discuss
xi.
Differentiate among the elastic and inelastic collision.
xii.
A person is standing near a fast moving train. Is there any danger that
he will fall towards it?
Write answer of any EIGHT questions. . (8*2=16)
i.
A girl drops a cup from a certain height, which breaks into pieces. What
energy changes are involved?
ii.
An object has 1 J of potential energy. Explain what does it mean?
iii.
Define the term energy. Describe the different types of mechanical
energy?
iv.
Why a diver does changes its body
position before and after diving in the pool?
v.
When mud flies off the tyre of a moving bicycle, in what direction does
it fly? Explain.
vi.
What do you know about INTELSAT’s communication system?
vii.
Can we realize an ideal simple pendulum?
viii.
Describe some common phenomenon in which resonance plays an important
role.
ix.
Differentiate among free and forced oscillations.
x.
How are the beats useful in tuning
musical instruments?
xi.
Why should sound travel faster in
solids than in gases?
xii.
What are the stationary waves? Describe the main characteristics of
stationary waves.
Write answer of any SIX questions.
(6*2=12)
i.
Can visible light produced interference fringes? Explain
ii.
Why the Polaroid sunglasses are better than ordinary sunglasses?
iii.
What is the importance o X-ray diffraction?
iv.
Why would it be advantageous to use blue light with a compound
microscope?
v.
How the power is lost in optical fiber through dispersion? Explain
vi.
Is it possible to construct a heat engine that will not expel heat into
the atmosphere?
vii.
Does entropy of a system increase or decrease due to friction?
viii.
Give an example of a natural process that involves an increase in
entropy?
ix.
Differentiate between reversible and irreversible reaction?
SECTION
2
Attempt any three question.
(3*8=24)
Q#01: (a) Define
rectangular component of a vector. How two can be added by rectangular
component method?
(b) Find the angle of projection of
projectile for which its maximum height and horizontal range are equal?
Q#02: (a) Drive relation for the kinetic energy
of a disc and a hoop?
(b)An electron strikes the screen
of a cathode ray tube with a velocity of 1.0*107 m/s. Calculate its
kinetic energy. The mass of
an electron is 9.1*10-31 kg.
Q#03: (a) What is the effect
of variation of pressure, density and temperature on the speed of sound in a
gas?
(b) A simple pendulum s 50 cm long
.what will be its frequency of vibration at a place where g=9.8 ms-2.
Q#04: (a) Define
astronomical telescope. Write its construction and magnifying power with the
help of ray diagram.
(b)In a double slit experiment the
second order maximum occur at Ф=0.250. The wavelength is 650 nm. Determine the slit
separation.
Q#05: (a) Drive the relation
Cp –Cv=R.
(b) What gauge pressure is required
in the city mains for a stream from a fire house connected to the mains to
reach a vertical height of 15m.
Practical:
Q#01: Write down the procedure to determine experimentally time period of a
simple pendulum is independent of its mass.
OR
Write down the procedure
To find the refractive index of a liquid using a concave mirror.
Graph paper
![](file:///C:\Users\Haseeb\AppData\Local\Temp\msohtmlclip1\01\clip_image002.jpg)
i.
What can you concluded from the graph?
ii.
Find the slope of the graph?
iii.
What is the acceleration when time is 6sec?
No comments:
Post a Comment