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Board Of Intermediate And Secondary Education Lahore F.A / F.sc Part II Physics Objective Type Past Paper 2012

Board Of Intermediate And Secondary Education Lahore F.A / F.sc Part II Physics Objective Type Past Paper 2012 

Inter Part II Lahore Board 2012
Paper Physics | Paper II (Objective Type)  
Group II
Time: 20 Minutes              Max Marks: 17
Note: Four possible answers A, B, C and D to each question are given. The choice which you think is correct, fill that circle in front of that question with Marker or Pen ink. Cutting or filling two or more circles will result in zero mark in that question. Write the letter A, B, C or D in the column (write correct option) against each question also. If there is a contradiction in the bubble and hand written answer, bubble option will be considered correct.
Q1. 1. The substances in which the atoms do not form magnetic dipole are called:
(A) Ferromagnetic
(B) Paramagnetic
(C) Diamagnetic
(D) Conductor
2. ”When platinum wire is heated, then it becomes—at temperature about 1600° C :
(A) White
(B) Yellow
(C) Green
(D) pull red
3. A wire of resistance R is cut into two equal parts, its resistance becomes R / 2. What happens to resistivity :
(A) Double
(B) Same
(C) Half
(D) One fourth
4. Production of X-rays can be regarded as the inverse of:
(A) Compton effect
(B) Fair production
(C) Photo electric effect
(D) Annihilation of matter
5. Pure choke consumes
(A) Minimum power
(B) Maximum power
(C) No power
(D) Average power
6. Neutron was discovered in 1932 by:
(A) Bohr
(B) hadwick
(C) Dirac
(D) Fenni
7. The mutual induction between two coils depends upon:
(A) Area of the coils
(B) Number of the turns
(C) Distance between the coifa
(D) All of these
8.  Presence of dielectric always:
(A) Increases the electrostatic force
(B) Decreases the electrostatic force
(C) Does not affect the electrostatic force
(D) Doubles the electrostatic force
9. An expression for current gain of a transistor is given by:
(A)ß = Ib/Ic
(B) ß = IB+IC
(C) ß = Ic-Ia
(D) ß = lc/lb
10. The number of electrons emitted ^depend upon
(A) Colour of target surface
(B) Shape of the surface
(C) Frequency of incident light
(D) Intensity of incident light
11. In modulation, low frequency signal is known as:
(A) Loaded signal
(B) Fluctuated signal
(C) Harmonic signal
(D) Modulation signal
12. In liquids and gases, the current is due to the motion of:
(A) Negative charges
(B) Positive charges
(C) Neutral particles
(D) Both negative and positive charges
13. If we make the magnetic field stronger, the value of induced current is:
(A) Decreased
(B) Increased
(C) Vanished
(D) Kept constant
14. The anode in the cathode ray oscilloscope:
(A) Control number of waves
(B) Control the brightness of spot formed
(C) Accelerates and, focus beam
(D) At negative potential with respect to cathode
15. Substances which break just after the elastic limit is reached are called:
(A) Ductile substances
(B) Hard substances
(C) Soft substances
(D) Brittle substances
16. Types of quarks are :
(A) 4
(B) 6
(C) 8
(D) 10
17. A capacitor is perfect insulator for:
(A) Alternating current
(B) Direct current
(C) Both A & B
(D) None of these
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