Model paper

Version No. ROLL NUMBER


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PHYSICS HSSC–II
SECTION – A (Marks 17)
Time allowed: 25 Minutes
Section – A is compulsory. All parts of this section are to be answered on this page and handed
over to the Centre Superintendent. Deleting/overwriting is not allowed. Do not use lead pencil.
Q.1 Fill the relevant bubble for each part. Each part carries one mark.
(1) Two charges q1 and q2 are placed in vacuum at a distance d and force between them
is F. If a medium of relative permittivity 4 is introduced between them then new
force will be:
F F
A. ⃝ B. ⃝
4 2

C. 2F ⃝ D. 4F ⃝
(2) Three capacitors of 4F each are connected in such a way that net capacitance of
their combination is 6F. It is possible if:
A. All the three in series ⃝
B. All the three in parallel ⃝
C. Two in series and one in parallel ⃝
D. Two in parallel and one in series ⃝
(3) Slope of I-V graph of a resistor is numerically equal to:
A. Conductivity ⃝ B. Conductance ⃝
C. Resistance ⃝ D. Resistivity ⃝
(4) Which one of the following is correct for an open circuit?
A. Vt = 0 ⃝ B. Vt < E ⃝
C. Vt = E ⃝ D. Vt = E – Ir ⃝
(5) Magnetic flux will be maximum when:
A. Magnetic field is perpendicular to the plane area ⃝
B. Magnetic field lies parallel to the plane area ⃝
o
C. Area is held at an angle of 45 ⃝
D. Magnetic flux density is perpendicular to area vector of the surface ⃝
(6) A proton is moving along the axis of a solenoid carrying a current. The magnetic
force on proton will be:
A. Radially inward ⃝ B. Radially outward ⃝
C. Zero ⃝ D. Parallel to axis of solenoid ⃝
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, (7) A steady current is passing through a coil, magnitude of self- induced emf in it,
will be:
A. zero ⃝ B. maximum ⃝
I I
C. =L ⃝ D.  = L ⃝
t t

(8) At high frequency in a capacitive circuit, the current will be:
A. Large ⃝ B. Small ⃝
C. Zero ⃝ D. Infinite ⃝
(9) The peak value of A.C source is 20 A, its rms value will be:
A. 14.1 A ⃝ B. 10 A ⃝
C. 20 A ⃝ D. 28.2 A ⃝
(10) The materials in which disordered structure of liquid is frozen are:
A. Amorphous ⃝ B. Crystalline ⃝
C. Polycrystalline ⃝ D. Quartz ⃝
(11) The temperature below which the resistivity of a superconductor falls to zero is
called:
A. Absolute temperature ⃝ B. Kelvin temperature ⃝
C. Limiting temperature ⃝ D. Critical temperature ⃝
(12) In a half wave rectifier, the diode conducts:
A. Only positive half of input cycle ⃝
B. Only negative half of input cycle ⃝
C. Both halves of input cycle ⃝
D. Any one half of input cycle ⃝
(13) The maximum kinetic energy of emitted photoelectrons, from different metal
surfaces, depends upon:
A. Intensity of incident light only ⃝
B. Frequency of the incident light only ⃝
C. Nature of metal surface ⃝
D. Both frequency of incident light and nature of metal surface ⃝
(14) The rest mass of photon is:
A. Infinite ⃝ B. Zero ⃝
C. 1. 6  1027 kg ⃝ D. 3  108 kg ⃝
(15) The type of spectra produced by atoms is:
A. Continuous spectra ⃝ B. Band spectra ⃝
C. Line spectra ⃝ D. Braking radiation spectra ⃝
(16) Strong nuclear force exists between:

A. Hadrons ⃝ B. Photons ⃝

B. Leptons ⃝ D. Muons ⃝

1
(17) The half-life of a radioactive element which has only of its original mass left
32
after elapsed of 60 days is:
A. 30 days ⃝ B. 20 days ⃝
C. 15 days ⃝ D. 12 days ⃝




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