| 1 |
According to the Bernoulli's theorem the pressure velocity are
|
A. equal to each other
B. proportional to each other
C. inversely proportional to each other
D. none of them
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| 2 |
1 gm-cm-3is equal to
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A. 103kg-m-3
B. 10-3kg-m-3
C. 1kg-m-3
D. 106kg-m-1
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| 3 |
The maximum value of drag forcer on an object is 9.8 N . What will be the value of its mass?
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A. 9.8 Kg
B. 2 kg
C. 4 Kg
D. 1 Kg
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| 4 |
The transition from solid state to liquid state is:
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A. Abrupt
B. Slow
C. Continous
D. Discontinous
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| 5 |
Inverter is the name given to:
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A. NOT gate
B. OR gate
C. NOR gate
D. AND gate
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| 6 |
Adiabatic change occurs when the gas
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A. expands
B. compressed
C. expands or compressed
D. expands or compressed rapidly
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| 7 |
With the increase of temperature viscosity
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A. Increase
B. Decrease
C. Remains same
D. Doubles
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| 8 |
The chemical behaviour of an atom is determined by
|
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
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| 9 |
Light year is a unit of:
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A. Time
B. Distance
C. Velocity
D. Intensity of light
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| 10 |
When a body is moving with uniform positive acceleration, the velocity- time graph is a straight line. Its slope is
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A. zero
B. negative
C. positive
D. non-existing
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| 11 |
If the time period a simple pendulum is 2 s, its frequency would be
|
A. 2 Hz
B. 1.5 Hz
C. 1.0 Hz
D. 0.5 Hz
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| 12 |
The motion of molecules in gases is:
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A. Orderly
B. Random
C. Circular
D. All of these
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| 13 |
The phase at the positive peak of an A.C. cycle is:
|
D. 0 andᏘ
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| 14 |
If F=0.04 N and X=4 cm then K=
|
A. 1 Nm-1
B. 2 Nm-1
C. 3 Nm-1
D. 4 Nm-1
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| 15 |
If we draw a graph between d (along x-axis) and F (along y-axis) and get a straight line horizontal to x-axis, then area under this straight line represents:
|
A. Power
B. Work
C. Pressure
D. None of these
|
| 16 |
The passage of current is accompanied by a
magnetic field in the surrounding space:
|
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| 17 |
If a nucleus emits an alpha particle, its mass number decreases by 4 while charge number decreased by
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A. -4
B. 4
C. 2
D. 1
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| 18 |
When a constant potential difference is applied
across the conductor, the drift velocity of electrons:
|
|
| 19 |
Which of the following is scalar quantity?
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A. Electric potential
B. Velocity
C. Momentum
D. Force
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| 20 |
The current produced by moving a loop of wire across a magnetic field is called
|
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current
|
| 21 |
The study of physics involves?
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A. Structure of space and time
B. Interaction of electromagnetic radiation with matter
C. Both of them
D. Chemical changes
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| 22 |
An emf is set up in a conductor when it:
|
A. Is kept in a magnetic field
B. Is kept in an electric field
C. Moves across a magnetic field
D. Both A and B
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| 23 |
Which of the following is not an assumption of kinetic energy
|
A. a finite volume of gas consists of very large number of molecules
B. the gas molecules are in random motion
C. collision between the gas molecules are inelastic
D. the size of the gas molecules is much smaller than the separation between molecules
|
| 24 |
The amplitude of oscillation of each atom in a metallic crystal rises with the
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A. rise in temperature
B. decrease in temperature
C. even temperature remains constant
D. all of them
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| 25 |
The power of an electric generating station is expressed in:
|
A. Kilo Jule
B. Kilowatt-hour
C. Kilo watt
D. Watt
|
| 26 |
In a three phase a.c generator if the first coil has a phase 0, then the other two coils will have phases
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A. 90° - 120°
B. 20° and 140°
C. 120° and 240°
D. 120° and 140°
|
| 27 |
According to the equation of continuity, when water falls from the tap, it's speed increases and its cross-sectional area
|
A. decreases
B. increases
C. becomes zero
D. none of them
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| 28 |
The electric intensity at infinite distance from the point charge will be
|
A. Infinite
B. Positive
C. Zero
D. Negative
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| 29 |
The electric field, magnetic field and the direction of their propagation are mutually
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A. perpendicular
B. parallel
C. none of these
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| 30 |
Laser is a beam of:
|
A. Visible light
B. Infra red light
C. Ultra violet light
D. Violet light only
|