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*101. Let a disc, a cylinder, a solid sphere, and a ring be rolled down in an inclined plane simultaneously Which will reach first choose one among the following *

- Disc
**Solid sphere**

- Cylinder
- Ring

*102. Assuming/supposing the pulley to be frictionless and mass less, the smallest coefficient of static friction is 0.33 to cause the cylinder to roll If for the cylinder M=70kg and radius of gyration 400 mm Then which will be correct among the following*

- The cylinder will moveup and the mass will descend
- The cylinder will moveup and the mass will also move up

**The cylinder will roll down the plane and mass will ascend**- None is true

*103. With the help of dimensions method it can be proved that frequency of a stretched wire depends on which statement among the following*

- Doesn’t depend/rely on the mass of the wire
**Depends on the mass of the wire**- Depends on the displacement of the wire
- None of these

*104. When a body undergoes an acceleration what will exist*

- Its velocity increases
**A force acts upon it**- Its speed increases
- It falls toward the earth

*105. Which kind of storage device can be carried around which among the following?*

- Hard disk
- System cabinet
- Hard disk derive
**Floppy disk**

*106. A body is said to be perfectly elastic/flexible if which among the following is exist?*

- It can freely move
- Its surface is perfectly smooth
- It is not affected by external force
- It can recovers its original/real shape/size when the deforming force is removed

*107. A 30 kg. Block lies on a frictionless table and is connected to a 10 kg block by a rope passing over a frictionless pulley Choose one *

- The acceleration of the 10 kg block will be 9.8 m/s
^{2} - Both the blocks move with the same/equal velocity

**Both the blocks are accelerated by the same/equal magnitude**- The acceleration acting on 10 kg block is 0

*108. Let us suppose that a block/body resting on an inclined plane just begins to slide down the plane when the angle of inclination is gradually increased to 30, the coefficient of friction will be equal/same to which among the following?*

- Cos 300
- Cot 300
**Tan 300**- Sin 300

*109. Which of the following pairs have identical dimensions choose one among following*

- Momentum and force
- Pressure and surface tension
**Work and kinetic energy**- Momentum of force and angular momentum

*110. The maximum/highest value of static friction is called which among the following?*

- Rolling friction
- Normal reaction
**Limiting friction**- Coefficient of friction

*111. What is the shape of the liquid meniscus in a capillary tube placed in a liquid that wets the surface of the tube choose one? *

- Concave downwards
- Convex up
**Flat**- None of the above

*112. A piece of weighted wood just floats in water When placed in alcohol (of lower density) what will be the floating position? *

- Float higher
- Stay as before
**Float lower**- Sink

*113. A force of 100 dynes acts for 10 seconds on a body of mass 500g What is the change in momentum choose one among following*

- 10 C.G.S units
- 100 C.G.S units
- 1000 C.G.S units
**5000 C.G.S units**

*114. A 40kg cart moving/moved at 3 m/s makes a head a head-on collision with a 20 kg cart at rest, as illustrated in Fig. 1 If the collision is completely/totally inelastic, the speed with which the carts leave the impact is approximately/around about which among the following*

- 6 m/s
**2 m/s**- 20 m/s
- 0.2 m/s

*115. If the earth stopped rotating, the weight of objects at the equator would what among the following?*

- Be the same as before
- Be less
**Be greater**- Very with latitude

*116. With the help of dimensions method it can be proved that frequency of a stretched wire choose one *

**Depends on the mass of the wire**- Does not depend on the mass of the wire
- Depends on the displacement of the wire
- None of these

*117. When a body undergoes an acceleration choose which one is correct?*

- Its velocity increases
**A force acts upon it**- Its speed increases
- It falls toward the earth

*118. A satellite travels in a circular orbit at a speed of 20,000 km/hr to stay at a constant altitude To escape from the earth, the speed would have to be increased to which among the following?*

**40,000 km/hr**- 28,000 km/hr
- 21,000 km/hr
- 64,000 km/hr

*119. A projectile is fired at an angle of 37° with an initial speed of 100 m/s What is the approximate versicle component of its velocity after 2s choose correct one among following*

- 80 m/s
**40 m/s**- 60 m/s
- 100 m/s

*120. The static friction is which among the following?*

- Always greater than the dynamic friction
- Always less than the dynamic friction
- Equal to the dynamic friction
**Some times greater/higher and some times less than/lower the dynamic friction**

*121. An explosion blows a rocket into three parts. Two piece go off at right angles to each other, a 100 kg piece at 12 m/s and 200 kg piece at 8 m/s. Then mass of third piece which flies off at an angle of 53° is which among the following?*

- 10 kg
- 20 kg
**30 kg**- 40 kg

*122. A tuning fork of frequency 512 produces 6 beats in 1 second, when vibrating along with a vibrating segment of a monometer wire The frequency of the vibration of sonometer wire will be which among the following?*

- 512
- 506
- 518
**506 and 518**

*123. A tuning fork of frequency 645 Hz, gives/provide resonance for 0.5 m column of hydrogen gas enclosed in a pipe closed at one end The speed of sound in hydrogen will be equal to which among the following?*

**2580 m/s**- 322.5 m/s
- 645 m/s
- 1290 m/s

*124. The pitch of a sound is determined by which among the following?*

**Frequency**- Speed
- Direction
- Number of beats

*125. At the mean position of vibration, the velocity of the vibrating particle is which among the following?*

- Zero
- Infinity
**Maximum**- None of the above

*126. A particle moving with S.H.M passes through two points A and B, with the same/equal velocity, having occupied 2 seconds in passing from A to B; after another 2 seconds it returns to B what will be the period*

- 2 seconds
- 4 seconds
- 5 seconds
**8 seconds**

*127. Energy is not transferred in a standing wave choose correct*

- False
- Uncertain
**True**- None of these

*128. Two similar open organ pipes when sounded together produce 7 beats/sec. If their lengths are in the ration of 50: 51, then what will be the ration of their frequencies?*

- 357:350
- 50:51
**51:50**- 1:7

*129. The Laplace’s correction in the expression for the velocity of sound given by Newton is needed/required because sound waves are which among the following?*

- Are longitudinal
- Propagate isothermally
**Propagate adiabatically**- Are of long wavelengths

*130. What is the shape of the liquid meniscus in a capillary tube placed in a liquid that wets the surface of the tube choose correct*

**Flat**- Concave downwards
- Convex up
- None of the above is correct

*131. A body falling freely under gravity travels half its path in the last one second The total time of fall is approximately.around about which among the following?*

- 4.4s
**3.4s**

- 2.4s
- 2.0s

*132. An astronomical telescope has an objective of focal length 80 cm and gives 8 × angular magnification. The focal length of the eye piece is which among the following? *

- 6.0 cm
- 8.0 cm
**10.0 cm**- 12.0 cm

*133. The points of units angular magnification in a lens assembly are which among the following?*

**Nodal Points**- Principal Points
- Focal Points
- Contin Points

*134. In He Ne laser the most favorable ratio of Helium to Neon for satisfactory laser action is.which among the following? *

**7:1**- 1:4
- 4:11
- 1:7

*135. The electric field at 20 cm from the centre of a uniformly charged dielectric sphere of radius 10 cm is E Then at a distance 5 cm from the centre it will be what among the following?*

- 16 E
- 4 E
- 2 E
**Zero**

*136. Two pieces of wire of the same/equal material have their lengths in the ratio of 1:2 and diameters in the ratio of 2:1. If they are stretched by the equal/same force, elongation will be in the ration of which among the following?*

- 1:2
**1:8**- 2:1
- 8:1

*137. The pressure at the bottom of a tank of liquid is not proportional to which among the following? *

- The density of the liquid
- The height of the liquid
- The acceleration
**The area of the liquid surface**

*138. A body in equilibrium may not have which among the following?*

**Acceleration**- Momentum
- Velocity
- Kinetic energy

*139. If C is proportional to D, then which among the following is correct?*

- The product CD is constant
- The ration C/D is constant
- C is smaller than D
**C is larger then D**

*140. When a body undergoes an acceleration which among the following?*

- Its velocity increases
- Its speed increases
- It falls toward the earth
**A force acts upon it**

*141. The units of physical quantities accepted all over the world is which among the following?*

**S.I Units**- System of Integral units
- BTU system
- CGS systems

*142. which among the following basic quantities in S.I unit system? *

- 3
- 1
- 6
**7**

*143. The significant figure in 30200 is which among the following? *

- 5
- 2
**3**- 4

*144. The significant figure in 0.00203090 is which among the following?*

- 9
- 8
- 0
**6**

*145. Electromagnetic wave theory of light as proposed by which among the following?*

- Faraday
- Newton
**James Clark Maxwell**- Coulomb

*146. The Only Pakistani Scientist (Physicist) who received Nobel Prize in Physics is which among the following?*

- Dr. Muneer Ahmad
- Dr. Abdul Qadeer Khan
- Dr. Muneeb Ahmad
**Prof. Abdul Salam**

*147. The Quantum Theory was introduced (in 1900) by which among the following?*

- Hertz
- Bohr
**Planck**- Einstein

*148. The Dimensions of weight are which among the following?*

- MLT
^{2} **MLT**^{2}- LT
^{2} - ML
^{2}T

*149. The dimensions of angular momentum are which among the following?*

**ML**^{2}T^{2}- MLT
^{2} - MLT
^{2+} - MLT

*150. The Relationship between the mater and energy is studied under which among the following? *

- Statistics
- Chemistry
- Cosmology
**Physics**