Mechanics BS 1 Semester/Term 2019
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BS ZOOLOGY first semester Animal diversity ZOOL 101 - university of Punjab 2025
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Literary criticism
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this paper consists of 60 marks but now we have 35 marks paper.
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Can you please tell me more past papers please because my exams are starting from next week
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Did you provide the past papers of the science of society uos?
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same paper and retum it to the center superintendent within the time allowed.
OBJECTIVE
O. No. 1: Encircle the correct Option. Cutting or Erasing results Into Zeromark. (12 x 1 - 12]
i) Kilowatt hour is the unlt of
a-Power
b-Work
c-Acceleration
d-Momentum
Hi) The force in motion of roaket is
a conservative
b- variable
c-non-conservative d- none
lif Rocket equation is used to determine
a - increase
b-decrease
c- no offect
di constant
iv) In elastic collision K.E and momentum
a. not conserved
b- conserved
c-constant
d- none
v) Newton's first law is also called
a- Law of moment
b-Law of inertia
e-Moment
d-Inertia
vi) Product of mass and velocity is
a - impuixe
b- distance
c- momentum
d- velocity
vul The commercial anit of alectric energy
a-Kilowatt hour
b-watt
cjocie
d-none
vili Motion of projectile ia........... dimensional,
a One
B. TwO
c- T.iree
d. Four
ix) Torque has zere value if the angle between and F is
a- 0 degree
B-30 degree
c-90 degree
d-60 degre-
x) In projectile motion, the vertical component of velocity
3- remsins constant
b- varies
c-increases with time
el- becomes zero
xi) The velocity dependent forces are
a Conservative forces b-variable forces, e-Non-conservative forces d-none
xill The angular momentum is
。
a Vector quantity
b-scalar quantity
c• both
d- None
Programne: BS Physica (11)
Course Title: Mechanics-l
Time Allowed:
2 Hrs.
Final Fall Semester: 2019-20
Course Code: PHY-301
Cr. Mr. 3（3-01
Subjective Marks: 24
SUBJECTIVE
Attempt Ail Questions. Each question carry aqual Marks.
[6x4=24]
O. Ne. 2:
(a) State and prove Stokes theorem?
(03)
(b) If A, B and Care vectors then Show that A . (B x x - B. (C x
A) = C. IA X
B) (03)
Q. No. 3:
(a) What is a rotor? Find an expression for tangential speed of a man on the wall of the
rotor.
(b) A circular curve of highway is dosigned for traffic moving at 60 Kmih. If the radius
of curve is 150 m. What is the correct angle of banking of the road?
(03)
Q. No. s:
(a) We conservate face and non consorvative force? Prove that elastic restoring fo
is conservative force?
(b) Define Kilo Watt Hour. Prove that 1 Kwh = 3.6 x 10° J.
(02)
O. No. 5:
(a) Explain elastic collision in one dimension.
(03)
(h) What is canter of mass? Calculate center of mass of solid uniform road.
(03)
