| 1 |
Ethanol (alcohol) is a type of:
|
A. Electric fuel
B. Bio fuel
C. Nuclear fuel
D. None of these
|
| 2 |
Which of the following is the longitudinal waves?
|
A. Sound waves
B. Waves on plucked string
C. Water waves
D. Light waves
|
| 3 |
By placing a dielectric in between the charges, the electrostatic force between them
|
A. Is always reduced
B. Is always increased
C. Is not affected
D. Is increased one million times
|
| 4 |
Pair production take place when energy ofγ-rays photon is
|
A. equal to 1.02 Mev-
B. greater than 1.02 Mev
C. less than 1.02 Mev
D. none of these
|
| 5 |
In a soft iron, domains are
|
A. easily oriented along external field and do not return to original random positions
B. easily oriented along external field and readily returns to originally random position
C. do no oriented along external field and also do not returns to originally random position
D. none of them
|
| 6 |
If the object and its image are located at a distance of 5 cm from the focus of a convex lens, the focus length of the lens will be:
|
A. 5 cm
B. 10 cm
C. 20 cm
D. 25 cm
|
| 7 |
If speed of electron is 5 x 105m/s. How long does it take one electron to transverse 1 m?
|
A. 1 x 106
B. 2 x 106
C. 2 x 105
D. 1 x 105
|
| 8 |
The disorder in the system increases due to the
|
A. removal of heat
B. addition of heat
C. removal or addition of heat
D. none of them
|
| 9 |
For multiplication and division purposes, percentage uncertainties are:
|
A. Add
B. subtracted
C. Multiplied
D. Divided
|
| 10 |
Hertz is unit of:
|
A. Time period
B. Displacement
C. Amplitude
D. Frequency
|
| 11 |
Micheal Faraday and joseph Henry belong respectively to:
|
A. USA and England
B. England and France
C. England and USA
D. USA and France
|
| 12 |
The potential difference across each resistance in series combination is
|
A. same
B. different
C. zero
D. none of these
|
| 13 |
Examples of physical quantities are:
|
A. Length
B. Color
C. Effect of music
D. All of these
|
| 14 |
In series RC circuit when R=Xc, then the phase angle is
|
A. 0°
B. 90°
C. 70°
D. 45°
|
| 15 |
Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:
|
A. Newton's second law
B. Pascal's law
C. Carnot theorem
D. Second law of thermodynamics
|
| 16 |
The SI unit of electric flux is
|
A. Weber
B. Nm2C-1
C. NmC-1
D. Nm-2C
|
| 17 |
Substances that flow easily have
|
A. large coefficient of viscosity
B. small coefficient of viscosity
C. either of them
D. none of them
|
| 18 |
The peak voltage in a 220 volt A.C. supply is nearly
|
A. 220 volt
B. 253 volt
C. .311 volt
D. 440 volt
|
| 19 |
The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called
|
A. constant rate
B. volume rate
C. flow rate
D. steady rate
|
| 20 |
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
|
| 21 |
The stopping voltage for a certain metal is 100 volts, then the work function for the cathode plate is
|
A. 100 J
B. 1.6 x 10-17J
C. 100 eV
D. 1.6 x 10-17eV
|
| 22 |
Lens's law deals with the
|
A. Magnitude of induced current
B. Magnitude of induced e.m.f
C. Direction of induced e.m.f
D. Direction of induced current
|
| 23 |
The substance in which atoms cooperate with each other in such a way so as to exhibit a strong magnetic effect, are called
|
A. diamagnetic substances
B. ferromagnetic substances
C. paramagnetic substances
D. all of them
|
| 24 |
The year when A.H. compton was awarded Nobel Prize is:
|
A. 1923
B. 1927
C. 1931
D. 1935
|
| 25 |
A body walks to his school at a distance of 6 km with a speed of 2.5 km/h and walks back with a constant speed of 5 km/h. His average speed for round trip expressed in km/h is
|
A. 24/13
B. 10/3
C. 3
D. 4,8
|
| 26 |
The practical application of the phenomenon of Mutual induction is
|
A. Transformers
B. Generator
C. Motor
D. All of these
|
| 27 |
When angular acceleration is positive, the body rotates:
|
A. Slower
B. Slowest
C. Faster
D. None of these
|
| 28 |
An vector of 10 N makes an angle of 45° with x-axis. Angle between its rectangular components with be:
|
A. 45°
B. 90°
C. 135°
D. Zero
|
| 29 |
A mixture of two gases at constant temperature contains molecules of two kinds. The first kind of mass m1 nd rms speed c1 and the second molecule has mass m2 and rms speed c2, the ration c1/c2 is.
|
A. m1/m2
B. [m1/m2]1/2
C. m2/m1
D. [m2/m1]1/2
|
| 30 |
A particle is moving along a circular path with uniform speed. Its projection will execute____along the____of the circle:
|
A. Circular motion, circumference
B. Vibrator, chord
C. SHM, diameter
D. SHM, circumference
|