| 1 |
On which characteristics the loudness of sound pends upon.
|
A. Pitch
B. Speed
C. Wavelength
D. Amplitude
|
| 2 |
The electric current can be defined by its
|
A. Chemical effect
B. Magnetic effect
C. Heating effect
D. All of these
|
| 3 |
The law of equation of energy is applicable to the system whose constituents are.
|
A. At rest
B. In orderly motion
C. in random motion
D. Moving at constant speed
|
| 4 |
Lenses of what diameter are usually not practical.
|
A. Less than 1 m
B. Larger than 1m
C. Larger than 5 m
D. Larger than 10 m
|
| 5 |
The air plane lift is based on
|
A. Archimedes principle
B. Law of conservation of momentum
C. Bernoulli's principle
D. Law of conservation of energy
|
| 6 |
The bending of light when it enters a medium
|
A. Reflection
B. Refraction
C. Diffraction
D. Total internal reflection
|
| 7 |
a 5 kg mass is falling freely the force acting on it will be.
|
A. 0 N
B. 9.8 N
C. 5 N
D. 19.6 N
|
| 8 |
The final image produced by a microscope is.
|
A. Real and erect
B. Virtual and erect
C. Real and inverted
D. Virtual and inverted
|
| 9 |
An ice making machine extracts energy at the rate of 500 W The specific latent heat of fusion of ice is 300 kj kg-1. How long does it take to freeze 2 kg of water at 0 oC.
|
A. 120 s
B. 150 s
C. 1200 s
D. 1500 s
|
| 10 |
Iron loss in a dynamo arises because of.
|
A. The resistance of armature coil
B. The production of eddy current
C. The presence of mechanical friction
D. The leakage of flux
|
| 11 |
Balmer identified the spectral lines in the spectrum of hydrogen in
|
A. 1785
B. 1885
C. 1936
D. 1966
|
| 12 |
The negative of the potential gradient is
|
A. Potential energy
B. Electrostatic force
C. Electric field intensity
D. Electromotive force
|
| 13 |
Which given quantity remains the same in isotones.
|
A. Mass number
B. Atomic number
C. Number of neutrons
D. Number of protons
|
| 14 |
The blooming of the image due to dispersion in lenses is called.
|
A. spherical aberration
B. Chromatic aberration
C. Astigmation
D. Curvature of image field
|
| 15 |
Which of the following parameters does not characterize the thermodynamic state of matter.
|
A. Temperature
B. Pressure
C. Volume
D. work
|
| 16 |
Molecules of a liquid
|
A. Do not vibrate about their mean position
B. Are rigidly held with each other
C. Have weak attractive forces
D. Have strong attractive forces
|
| 17 |
when a bowl of water is take into the bottom of a well the work done is.
|
A. Positive
B. Negative
C. Zero
D. Maximum
|
| 18 |
Which material has the highest magnetic susceptibility.
|
A. Steel
B. Brass
C. Iron
D. Wood
|
| 19 |
The lowest stress at which strain increases in stress in called.
|
A. elastic limit
B. Plastic limit
C. Yield point
D. Bulk strength
|
| 20 |
the consumption of energy by a 60 watt bulb in 2 s is
|
A. 0.02 J
B. 30 J
C. 120 J
D. 60 J
|
| 21 |
Davison and Germer received the Nobel Prize in
|
A. 1929
B. 1931
C. 1935
D. 1937
|
| 22 |
A substance which has empty conduction band.
|
A. Insulator
B. Conductor
C. Semi conductor
|
| 23 |
When a following field is governed by Maxwell's equations.
|
A. Electrodynamics
B. Optics
C. electric circuits
D. All of these
|
| 24 |
We get light inside a room in a day time due to
|
A. Interferences
B. Polarization
C. Diffraction
D. Refraction
|
| 25 |
An object at the end of a spring oscillates with SHM of angular frequency 2 rad s-1 What is the period of oscillation.
|
A. 0.32 s
B. 0.50 s
C. 0.80 s
D. 3.1 s
|
| 26 |
Generally, electrical resistivity of intrinsic semiconductors decreases with increasing.
|
A. Pressure
B. Volume
C. Temperature
D. Density
|
| 27 |
The ability's of convex lens to produce convergence in a parallel beam is called its.
|
A. Magnification
B. Focal length
C. Power
D. Strength
|
| 28 |
Angular momentum of a body under a central force is
|
A. Zero
B. Maximum
C. Minimum
D. Constant
|
| 29 |
If the number of coulombs per second through a wire of 10 Ohm resistance across a 120 V line is 12, the current is
|
A. 5 A
B. 10 A
C. 12 A
D. 15 A
|
| 30 |
The dimensions of torque are.
|
A. [MLT-2]
B. [ML-1T-1]
C. [ML2T-2]
D. [ML-2]
|