| 1 |
In a transistor, if the central region is p-type then this type of transistor is known as
|
A. p-n-p transistor
B. n-p-n transistor
C. either of these
D. none of these
|
| 2 |
The product of force and time is called
|
A. acceleration
B. linear momentum
C. angular momentum
D. impulse
|
| 3 |
A solar cell converts energy of the Sun into:
|
A. Heat energy
B. Magnetic energy
C. Light energy
D. Sound energy
|
| 4 |
The only significant motion possessed by the mono-atomic gas represented is:
|
A. Translatory
B. Rotatory
C. Vibratory
D. None of these
|
| 5 |
The unit of resistivity is
|
A. ohm
B. ohm-m2
C. ohm-meter
D. ohm-m-1
|
| 6 |
The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 0.8 m sec-2comes out to:
|
A. 980 N
B. 580 N
C. 1380 N
D. Zero
|
| 7 |
The general theory of relativity treats problems involving
|
A. inertial frame of references
B. accelerating frame of references
C. both of these
D. none of these
|
| 8 |
Which one of the following waves belongs to electromagnetic spectrum
|
A. Radio and TV waves
B. Radar waves
C. Micro waves
D. All of them
|
| 9 |
Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same
|
A. Momentum
B. Kinetic energy
C. Velocity
D. Total energy
|
| 10 |
Stock's law holds for:
|
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
|
| 11 |
We can express the work in term of
|
A. directly measurable variables
B. indirectly measurable variables
C. either of them
D. both of them
|
| 12 |
To sources are said to be coherent if they have:
|
A. Same amplitude
B. Same wavelength
C. Definite phase relation with each other
D. None of them
|
| 13 |
The magnetic field inside a solenoid can be increased by:
|
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
|
| 14 |
If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be
|
A. 1 cm
B. 2 cm
C. 8 cm
D. None
|
| 15 |
The life time of metastable state is equal to
|
A. Life time of excited state
B. Greater than by excited state
C. Zero
D. Less than by excited state
|
| 16 |
A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:
|
A. 49 rad/sec2
B. 1 rad/sec2
C. 0.16 rev/sec2
D. Both A and C
|
| 17 |
The vibratory motion of a body whose magnitude of acceleration is directly proportional to the magnitude of its displacement and is always directed towards the equilibrium position is called
|
A. rotatory motion
B. motion under gravity
C. angular motion
D. simple harmonic motion
|
| 18 |
Those quantities which can be measured accurately are known as
|
A. Physical Quantities
B. Scalar Quantities
C. Vector Quantities
D. Non Physical Quantities
|
| 19 |
The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
|
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
|
| 20 |
Which branch of physics deals with the structure and properties of solids
|
A. Atomic Physics
B. Plasma Physics
C. Molecular Physics
D. Solid state physics
|
| 21 |
The fluid is incompressible, if itsdensity is
|
A. zero
B. constant
C. very high
D. very small
|
| 22 |
Two dissimilar metals
joined at their ends kept at constant temperature constitute:
|
|
| 23 |
The dimension of linear inertia is:
|
A. MLT2
B. ML°T-2
C. ML°T°
D. MLT-1
|
| 24 |
When a conductoris moved across a magnetic field:
|
A. Emf induced its similar to that of a battery
B. Emf induced gives rise to induced current
C. An emf is induced across its ends
D. All are correct
|
| 25 |
The motion of a projectile is
|
A. one dimension
B. two dimension
C. three dimension
D. all of them
|
| 26 |
An object moving through a fluid experiences a retarding force called a
|
A. frictional force
B. terminal force
C. opposing force
D. drag force
|
| 27 |
If m is the mass of the gases ejected per second with velocity v relative to the rocket of mass M, then the acceleration of rocket is
|
A. a = M/mv
B. a = mM/v
C. a = mv/M
D. a = v/mm
|
| 28 |
Work is always done on a body when:
|
A. A force acts on it
B. It moves through certain distance
C. None of A or B is correct
D. Both A and B is correct
|
| 29 |
When the conductor moved across a magnetic field:
|
A. Emf induced is similar to that of a battery
B. Emf induced gives rise to induced current
C. An emf induced across its ends
|
| 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
|