SSC Physics Model Question-5
Time: 02 hours. Full marks- 40
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[N.B- The figures in the right margin indicate full marks.
Ans any five questions from group- A and five from group- B]
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Group- A |
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1.
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What do understand by dimensional equation? What is its
necessity? 1+1
=
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2
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2.
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Distinguish between speed and velocity.
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2
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3.
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What is called watt? What is meant by 60w electric
bulb?
1+1 =
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2
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4.
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Define solid angle. What is the angle of minimum
deviation? 1+1 =
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2
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5.
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What do you mean by power of a leus? Write down uses of lens. 1+1 = |
2
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6.
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What is meant by intensity of electric field? What is the
unit of electric power? 1+1 =
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2
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7.
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What is solenoid? What is consequent pole?
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2
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8.
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What is x-ray? What is fossil fuel?
1+1=
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2
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9.
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Mention some uses of ultrasonic wave.
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2
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10.
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Describe wave theory of light.
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2
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Group- B
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11.
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(a) What is
momentum? For a body moving with uniform acceleration starting 1+3 =
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4
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from rest,
prove that the velocity at any time is proportional to the square root of the
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distance
traveled.
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(b) 800kg of steel
was lifted at a height of 10m in 20s by a crane. What power did
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2
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the Crane
apply?
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12.
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(a) State the laws
of falling bodies. Establish the relation T =
 , (Here the 2+2 = |
4
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symbols have
their usual meanings)
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(b) The velocity
of a car becomes 10m/s after traveling 9m by pressing the
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acceleration
Which can produce acceleration of 2m/s
 What was the
velocity of the |
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car at the
moment of pressing the accelerator?
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13.
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(a) What is
principle of multiplication of force. Show that the pressure at a depth in
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from the
surface of a liquid is h
 g 1+3 = |
4
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(b) The specific
gravity of a metal is 19, what is the weight of this metal of volume
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2
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25ml in
water?
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14.
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(a) What is called
regelation? Describe with figure Bottom ley’s experiment. 1+3 =
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4
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(b) Volume of a
lead bullet at temp 0°C is 25
 . What will be its volume at 100°C ? |
2
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[The
co-efficient of linear expansion of Lead is
 ] |
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15.
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(a) Describe
Searle’s method for determining the thermal conductivity of metals.
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4
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(b) 8670j amount
of heat is applied to 300g benzene at 23°C. What will be the final
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Temp?
[Specific heat of Benzene is 1700j/kg-k]
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16.
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(a) What is
candela? Prove that for a particular ray incident on a plane mirror, the 1+3=
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4
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angle of
rotation of the reflected ray is twice the angle of rotation of the
mirror.
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(b) The power of
lens of a spectacles is -2.5d. Find its focal length.
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2
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17.
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(a) What is
absolute refractive index? Drawing ray diagram describe how long 1+3 =
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4
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sight can be
remedied.
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(b) Explain the
relation between the refractive index and velocity of light.
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2
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18.
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(a) What is meant
by 220v-60w? Show that F = qE. (When the symbols have 1+3 =
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4
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usual
Meaning).
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(b) Four
resistance of
 each are connected
in parallel. What will be the |
2
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equivalent
resistance?
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19.
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(a) Describe with
diagram in detail the domain theory of magnetism.
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4
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(b) Explain a
current carrying solenoid behaves like a bar magnet.
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2
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20.
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(a) What is Big
Bang? What are fundamental particles.
1+1 =
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2
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(b) Describe the
usefulness and significance of energy in modern civilization.
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4
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**
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