BISE Saidu Sharif Swat Model Paper Class 11 (FA/FSc) Physics - I For 2015 Exams

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Write the correct option i.e. A/B/C/D in the empty boxes.
i. Which of the following has the smallest value _____________.
(A) 1mm1Pm (B) 1cm1Km © 1Gm1Em (D) 1nm1m
ii. Dimension of plank constant is _____________.
(A) (B) © (D) All of these
iii. Significant figure in are _____________.
(A) 3 (B) 4 © 5 (D) 7
iv. For which angle, are equal _____________.
(A) (B) © (D)


v. What is the minimum number of unequal vector to result in a null vector ________.
(A) 2 (B) 3 © 4 (D) All of these
vi. Which of the following instruments works on the principal of moments _________.
(A) Spring balance (B) Physical balance © Vernier calliper(D) Screw guage
vii. What does not change when force is applied on a body ____________.
(A) Acceleration (B) Speed © Position (D) Mass
viii. The range of projectile is maximum at an angle of _____________.
(A) (B) © (D)
ix. An example of non-conservative force is _____________.
(A)Electric force (B) Gravitational force©Frictional force(D) Magnetic force
x. Which one is constant for a satellite in orbit _____________.
(A) Velocity (B) K.E © P.E (D) Angular momentum
xi. Linear acceleration when “” is _____________.
(A) (B) © (D)
xii. With the increase of temperature, viscority of fluid is _____________.
(A) Increase (B) Same © Decrease (D) Double
xiii. Bernaulli’s equation is based upon law of conservation of _____________.
(A) Mass (B) Momentum © Energy (D) None of these
xiv. Time period of a second pendulum is _____________.
(A) 0.5 s (B) 1 s © 2 s (D) 2.5 s
xv. When sound waves travel from air to water, which of the following remains
constant _____________.
(A) Velocity (B) Wave length © Frequency (D) All of these
xvi. Sound waves travel faster in _____________.
(A) Air (B) Water © Solid (D) Vacume
xvii. In an adiabatic proceses, which of the following remains constant _____________.
(A) Heat (B) Temperature © Volume (D) Work
xviii. The unit of entropy is _____________.
(A) (B) © (D) Kelvin

Model Paper
Physics - I

Note: Time allowed for section B and C is 2 hours and 40 minutes.

SECTION “B” Marks: 40
II. Attempt any TEN Parts out of the following. Each Part carries equal marks.
i. Differentiate between light year & year?
ii. Why do Buses & Heavy Trucks have large stearing wheals?
iii. Define impulse & how it is related to momentum ?
iv. What is the angle for which the maximum height & range are equal?
v. Why energy saver are used instead of normal bulb?
vi. A Spherical body is drop in two different fluids, & its terminal velocity is different, why?
vii. Why a car has oblauge shape design?
viii. What happens to the time period of simple pendulum of its time period is four times?
ix. Differentiate between free & forced oscillation?
x. What is the difference between longitudinal & transverse wave?
xi. What is diffraction gratting?
xii. Why does the pressure of the air in automobile tyre increase, when driven for a while?
xiii. What is the difference b/w reversible & irreversible process?


SECTION “C” Marks: 27
Note: Attempt any THREE questions of the following. Each question carries equal Marks.
III. (a) What is Collission? Calculate final velocities of two elastically colliding bodies in one dimension.
(b) A 70kg ball travelling at a speed of to the right collides with another ball of 140g,
which is initially at rest. Find their velocities after collision?

IV. (a) Prove that Absolute P.E =
(b) The moon’s radius is & the acceleration due to gravity, g = on its surface.
Find out the escape velocity from moon’s surface.

V. (a) Prove that the projection of a body motion in a circle describes S.H.M.
(b) What should be the length of simple pendulum whose time period is one second? What is
its frequency?

VI. (a) What is meant by a heat engine? What is its main purpose? How is its efficiency defined?
(b) Find the efficiency of a cornot’s engine working between the steam & ice points.