| 1 |
The Stephen-Boltzmann law for the black body radiation is given by
|
A. E = T2
B. E = -T2
C. E = T4
D. E = -T4
|
| 2 |
Generally a temperature scale is established by
|
A. one fixed point
B. two fixed point
C. three fixed point
D. four fixed point
|
| 3 |
Specific heat at constant pressure is greater than the specific heat at constant volume because
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A. Heat is used up to increase temperature at constant pressure
B. Heat is used by gas for expansions purposes at constant pressure
C. Heat is use dup to increase internal energy
D. The above statement is invalid
|
| 4 |
The He-Ne laser discharge tube is filled with:
|
A. 85% He
B. 15% He
C. 50% He
D. 60% He
|
| 5 |
The bonding between the semi-conductor materials is
|
A. covalent
B. ionic
C. either of them
D. none of them
|
| 6 |
Which of the following is not an example of adiabatic process
|
A. the rapid escape of air from a burst type
B. the rapid expansion and compression of air through which a sound wave is passing
C. cloud formation in the atmosphere
D. none of them
|
| 7 |
The projectile attains maximum horizontal range when it is projected at an angle of
|
A. 30°
B. 45°
C. 60°
D. 75°
|
| 8 |
The Space around the Earth within which it exerts a force of attraction on other bodies is known as
|
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
|
| 9 |
Those quantities which can be measured accurately are known as
|
A. Physical Quantities
B. Scalar Quantities
C. Vector Quantities
D. Non Physical Quantities
|
| 10 |
When a body is moving on a surface, the force of friction is called
|
A. Static friction
B. Dynamic friction
C. Limiting friction
D. Rolling friction
|
| 11 |
In case of metallic conductors, the charge carriers are
|
A. Protons
B. Electrons
C. Antiprotons
D. Positrons
|
| 12 |
The space around the earth within which it expects a force of attraction on other bodies is known as:
|
A. Nuclear field
B. Conservative field
C. Electric field
D. Gravitational field
|
| 13 |
If a force of 0.05 N produces an elongation of 20 mm in a string, then its spring constant will be:
|
A. 250 N m-1
B. 25 N m-1
C. 2.5 N m-1
D. None of these
|
| 14 |
When brakes are applied to a fast moving car, the passenger will be thrown:
|
A. Forward
B. Backward
C. Downward
D. none of these
|
| 15 |
A metastable stae:
|
A. Is an excited state
B. Is that in which excited electron is stable
C. Is that in which excited electron is usually unstable
D. Means a time interval of 10-8second
|
| 16 |
We can express the work in term of
|
A. directly measurable variables
B. indirectly measurable variables
C. either of them
D. both of them
|
| 17 |
Which one of the following is an example of SHM
|
A. Motion in a plane
B. Motion in a swing
C. Motion in a car
D. None of these
|
| 18 |
Radio telescope is used to gather information from
|
A. Earth
B. Moon only
C. Far side of the universe
D. Sea water
|
| 19 |
The current sensitivity of the galvanometer is
|
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
|
| 20 |
SI unit of frequency is
|
A. second
B. hertz
C. revolution
D. vibrations/sec
|
| 21 |
An electron of the hydrogen atom in the second orbit is called its:
|
A. Ground state
B. Excited state
C. Ionized state
D. Any of these
|
| 22 |
The unit of spring constant is
|
A. J-sec
B. Metre
C. Nm-1
D. None of these
|
| 23 |
Energy is not carried by
|
A. Transverse progressive waves
B. Longitudinal vibration
C. Stationary waves
D. Electromagnetic
|
| 24 |
Ohm is the unit of
|
A. current
B. capacitance
C. energy
D. resistance
|
| 25 |
The natural frequency of a pendulum which is vibrating freely, depends upon its
|
A. mass
B. length
C. material
D. all of them
|
| 26 |
When a body is pulled away from its rest or equilibrium position and then released, the body oscillates due to
|
A. applied force
B. momentum
C. restoring force
D. none of them
|
| 27 |
Amplitude in SHM is equivalent to ______ in circular motion:
|
A. Diameter
B. Radius
C. Circumference
D. None of these
|
| 28 |
Experiments revealed that the ratio of the stress to the strain is a constant value for
|
A. different material
B. all materials
C. a given material
D. all of them
|
| 29 |
Improper biasing of a transistor circuit produces
|
A. Heavy loading of emitter current
B. Distortion in the output signal
C. Excessive heat at collector terminal
D. Faulty location of load line
|
| 30 |
When angular acceleration is positive, the body rotates:
|
A. Slower
B. Slowest
C. Faster
D. None of these
|