| 1 |
What is the mean free path in a gas.
|
A. The distance travelled by a molecule before hitting a wall
B. the average distance travelled by a molecule in one second
C. the average distance travelled by molecules in one second
D. The root mean square velocity
|
| 2 |
The moment of linear momentum is called.
|
A. Torque
B. Couple
C. Impulse
D. Angular momentum
|
| 3 |
The presence of a magnetic field can be detected by a
|
A. Small mass
B. Stationary positive charge
C. Stationary negative charge
D. Magnetic compass
|
| 4 |
Interference effects of light were verified by
|
A. Thomas Young
B. Newton
C. Bragg
D. Huygen
|
| 5 |
The maximum energy of emitted photoelectron is measured by
|
A. the largest potential difference they can traverse
B. The current they produce
C. The potential difference they produce
D. The speed with they emerge
|
| 6 |
Sound wave do not travel in vacuum because.
|
A. they are transverse waves
B. They are stationary waves
C. They require material medium for propagation
D. They do not have enough energy
|
| 7 |
To which law of thermodynamics, the concept of temperature is related to.
|
A. Zeroth law
B. First law
C. Second law
D. Third law
|
| 8 |
A convex lens of focal length 6 cm to be used to from a virtual image three times the size of the object Where must the lens be placed.
|
A. 1 cm
B. 2 cm
C. 3 cm
D. 4 cm
|
| 9 |
With which factor disputative power of a grating increases.
|
A. Order of spectrum
B. Number of lines per centimeter
C. Order and number of lines per centimeter
D. Shape of the grating
|
| 10 |
The exitance of antiparticle was discovered by
|
A. Wilson
B. Anderson
C. Dirac
D. Stefen
|
| 11 |
The word amorphous means
|
A. With regular structure
B. Without structure
C. May have regular structure
D. Thermoplastics
|
| 12 |
When the deforming force applied on a body produces change in shape, thenit is said t be
|
A. Tensile stress
B. Compression stress
C. Shear stress
D. Shear modulus
|
| 13 |
What is the traditional name for a capacitor
|
A. Choke
B. Condenser
C. Transformer
D. Inductor
|
| 14 |
Which one of the following instruments has the maximum resistance.
|
A. Ammeter
B. Voltmeter
C. Micro ammeter
D. Milli ammeter
|
| 15 |
The electromagnetic waves propagated outing space from antenna of a transmitter are known as.
|
A. Infrared waves
B. Light waves
C. Radio waves
D. X-rays
|
| 16 |
If a rope in a hand makes 10 oscillations after every 2 s. the frequency of the wave is.
|
A. 2 C s-1
B. 5 C s-1
C. 10 C s-1
D. 20 C s-1
|
| 17 |
Who was the author of Mathematical principles of Natural philosophy.
|
A. Kepler
B. Einstein
C. Max Planck
D. Newton
|
| 18 |
the gain of an amplifier is independent of
|
A. The two externally connected resistances
B. What is happening inside the amplifier
C. Internal structure of the amplifier
D. All of the above
|
| 19 |
Why does a glass plate inside a colorless liquid become invisible
|
A. The colours of both are same
B. The densities of both are same
C. Their refractive indices are same
D. Their refractive indices are different
|
| 20 |
What for is a modulator circuit used.
|
A. To eliminate carrier waves
B. To superpose the radio frequency signal on the carrier waves
C. To transmit the signal
D. To create sound waves
|
| 21 |
The SI unit of momentum is.
|
A. kg m s-2
B. kg m2 s-2
C. kg m s-1
D. kg s-1
|
| 22 |
Which gas strictly obeys gas laws.
|
A. Hydrogen gas
B. Inert gas
C. Ideal perfect gas
D. Helium gas
|
| 23 |
Clouds are white because they efficiently scatter sunlight of all
|
A. Colours
B. Wavelengths
C. Frequencies
D. Phases
|
| 24 |
Alpha particles are
|
A. Helium nuclei
B. sodium nuclei
C. Ioized nuclei
D. Hydrogen nuclei
|
| 25 |
Which of the following has maximum viscosity.
|
A. Oxygen
B. Mercury
C. Water
D. Glycerine
|
| 26 |
When the lift is moving upward with an acceleration then weight of the object will be.
|
A. w = ma
B. w - ma
C. w
D. 2 w
|
| 27 |
If a resistance is connected in parallel with a galvanometer the resulting instrument is called.
|
A. A voltmeter
B. An ammeter
C. A wattmeter
D. A potentiometer
|
| 28 |
At high frequency the current through a capacitor will be
|
A. Small
B. Zero
C. Large
D. Infinity
|
| 29 |
The closed end of an organ pipe having longitudinal stationary waves in it behaves as
|
A. Antinode
B. Source of waves
C. Node
D. Antinode
|
| 30 |
LASER is a device which can produce
|
A. Monochromatic beam of light
B. Coherent beam of light
C. An intense beam of lgiht
D. All of these
|