PHYSICS PAST PAPER 10TH 2018 SARGODHA BOARD GROUP 1 OBJECTIVE
PHYSICS
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Sargodha
Board 2018
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GROUP 1
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Maximum Marks: 12
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OBJECTIVE
TYPE
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Time Allowed: 15 Minute
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Q.1. (A) Choose the correct option from the columns A, B, C and D
and fill up the bubbles: 12
1.
The half of
cobalt is:
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40 years
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50 years
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20 years
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30 years
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2.
The brain of
any computer system is
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Control Unit
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CPU
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Memory
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Monitor
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3.
The basic
operations performed by a computer are:
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Arithmetic operation
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Non arithmetic operation
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Logical operation
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Both A & B
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4.
Types of
waves are:
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4
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3
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2
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1
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5.
The speed of
sound at room temperature is:
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320ms-1
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330ms-1
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340ms-1
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350ms-1
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6.
The
refractive index ice is:
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1.52
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1.31
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2.45
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1.33
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7.
Which one of
the following quantity is not change during refraction of light.
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Its Direction
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Its Speed
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Its frequency
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Its wavelength
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8.
The value of
‘K’ in Colombo’s law is:
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9x109Nm2C-2
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9x1011Nm2C-2
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9x10-9Nm2C-2
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9x10-11Nm2C-2
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9.
Electric
potential and emf:
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Are same quantities
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Two different quantities
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Have different units
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Both A & B
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10. The combined resistance of two identical resistors connected in
series is 8 ohm. Their combined resistance in a parallel arrangement will be:
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2Ω
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4Ω
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8Ω
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12Ω
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11. The presence of magnetic field can be detected by a:
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Small mass
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Stationary positive charge
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Stationary negative charge
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Magnetic compass
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12. The particles emitted from a hot cathode surface are:
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Positive ions
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Negative ions
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Protons
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Electrons
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BIOLOGY
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Sargodha
Board 2018
|
Group 1
|
Maximum
Marks: 48
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SUBJECTIVE
TYPE
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Time Allowed:
1.45 hours
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SUBJECTIVE
TYPE
(PART-1)
Q2. Write short answers to any FIVE (5)
questions: (5x2=10)
(i)
Define reflection of
waves.
(ii)
What are mechanical
waves. Write an example.
(iii)
Differentiate noise and
music.
(iv)
Write down tow uses of
ultrasound.
(v)
Define intensity of
sound. Write its unit.
(vi)
Define potential
difference and write its unit.
(vii)
What is meant by
electromotive force?
(viii)
What is unit of
resistance? Define it.
Q3. Write short answers to any FIVE (5)
questions: (5x2=10)
(i)
Define power of a lens
and its unit.
(ii)
Define the terms
resolving power and magnifying power.
(iii)
Define total internal
reflection.
(iv)
State Coulomb’s Law.
(v)
Define the unit of
capacitance.
(vi)
What is the role of
computer in everyday life?
(vii)
Differentiate between the
primary memory and secondary memory.
(viii)
What is Internet.
Q4. Write short answers to any FIVE (5)
questions: (5x2=10)
(i)
What is meant by mutual
induction?
(ii)
What is meant by electric
moto?
(iii)
Define thermionic
emission.
(iv)
Write names of two parts
of cathode ray oscilloscope.
(v)
What is meant by truth
tables?
(vi)
Differentiate between
atomic number and neutron number.
(vii)
What is meant by nuclear
fusion?
(viii)
Write the causes of
background radiations.
(PART-1I)
Note: Attempt any TWO questions. (2x9=18)
Q5. (a) Distinguish between longitudinal and
transverse waves with suitable examples.
(b) An object 30 cm tall is located 10.5 cm
from a concave mirror with focal length 16 cm.
(a)
Where is the image located? (b) How
high is it?
Q6. (a) Write four characteristics of series
combination of capacitors.
(b) A electric bulb is marked with 220 V, 100
W. Find the resistance of the filament of bulb. If the bulb is used 5 hours
daily. Find the energy in KWh consumed by the bulb in one month (30 days)
Q7. (a) What do you understand by the term word
processing and data managing.
(b) Technetium 99 is a radioactive element,
has half-life of 6 hours if there is 200 mg of this
technetium present, how much will be left in 36 hours.
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