| 1 |
Mutual inductance has a practical role in the performance of the
|
A. Radiochoke
B. Transformer
C. Generator
D. Trnasistor
|
| 2 |
If the average velocity of an object is zero in some time internal the displacement of the object for that intercanal will be.
|
A. Infinite
B. zero
C. Increase
D. Decreasing
|
| 3 |
Which of the following pair of physical quantities have the same dimension.
|
A. Momentum and pressure
B. Energy and work
C. Linear and angular momentum
D. Force and surface tenstion
|
| 4 |
An alternation produced in shape length or volume when a body is subjected to some external force is.
|
A. Deformation
B. Polymerization
C. Crystallization
D. Elasticity
|
| 5 |
When a body is taken out of the earth's gravitational field, the P.E. with respect to earth is
|
A. Zero
B. Minimum
C. Maximum
D. geothermal
|
| 6 |
What is the heat required in Kilo joules when the temperature of 100 g of copper is raised thgough 20 K/. Specific heat capacity of copper is 0.4 x 10-3 kg -1 k-1
|
A. 0.4 kj
B. 0.8 kj
C. 400 kj
D. 800 kj
|
| 7 |
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
|
| 8 |
The pressure of a goas is directly proportion to
|
A. Mean velocity of the molecules
B. Mean square velocity of the molecules
C. Root mean square velocity of the molecules
D. Instantaneous velocity of the molecules
|
| 9 |
An electric motor could be used as a
|
A. Battery
B. Capacitor
C. Dynamic
D. Transofrmer
|
| 10 |
A fixed point inside the lens through which a ray of light does not change its path is called.
|
A. Pole
B. Focus
C. Centre of curvature
D. Opticla centre
|
| 11 |
Which of the following type of force can do no work on the particle on which it operates.
|
A. Gravitational force
B. Frictional force
C. Centripetal force
D. Elastic force
|
| 12 |
If the base emitter junction is forward biased and base collector junction is reverse biased the BJT is in.
|
A. cut of mode
B. Amplification mode
C. Saturation mode
D. Inversion mode
|
| 13 |
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
|
| 14 |
A diver leaving the diving board makes a somer sault in the air.
|
A. This is due to gravitational force
B. The moment of inertia is decreased during the turn
C. His moment of inertia is increased
D. He pushes at the air for making the true
|
| 15 |
Which of the following is an electrostatic generator.
|
A. Winshurst machines
B. Van de Graff generator
C. Electrophorus
D. All of the above
|
| 16 |
The distance between any two consecutive bright or dark fringes is called.
|
A. Wavelength
B. Amplitude
C. Fringe spacing
D. Wavelet
|
| 17 |
The focal length of a thin converging lens is 10 cm What is the maximum distance from the lens that the object can be placed so that the lens acts as a magnifying glass.
|
A. 5 cm
B. 10 cm
C. 15 cm
D. 20 cm
|
| 18 |
The susceptibility of a paramagnetic material is
|
A. negative
B. Positive
C. Zero
D. Infinity
|
| 19 |
For a prism of particular and given wavelength the resolving power varies as
|
A. First power of lens of its base
B. Square of inverse length of its base
C. Increases of length of its base
D. Cube of the length of its base
|
| 20 |
A body of mass 2 kg is suspended from the celling of an elevator moving up with an acceleration 'g' its apparent weight in the elevator will be.
|
A. 9.88 N
B. 19.8 N
C. 29.4 N
D. 39. 2 N
|
| 21 |
During an adiabatic gas expansion the environment
|
A. Serves as a heat sink
B. Serves as a heat source
C. Must be at a higher temperature than the gas
D. Does not have to participate
|
| 22 |
If the resultant of all the forces acting on a body is zero then the body is in
|
A. Translation equilibrium
B. Rotational equilibrium
C. Equilibrium
D. Dynamic equilibrium
|
| 23 |
The basic circuit element is a D.C. circuit is
|
A. An inductor
B. A resistor
C. A capacitor
D. A battery
|
| 24 |
As the mass number varies, which of the quantities does not change w.r.t nucleus.
|
A. Mass
B. Volume
C. Binding energy
D. Density
|
| 25 |
Chromatic aberration can be removed by using.
|
A. Convex lens
B. Two convex lenses
C. Concave lens
D. Combination of a convex lens and a concave lens
|
| 26 |
The process of energy generation in sun and stars is.
|
A. Fusion of heavy nuclei
B. fusion of light nuclei
C. Fission of light nuclei
D. Solar panels
|
| 27 |
The law of inertia was first time formulated by
|
A. Galileo
B. Newton
C. Kepler
D. Planck
|
| 28 |
The electric supply line in houses works at 220 V what will be the amplitude of emf.
|
A. 120 V
B. 331 V
C. 220 V
D. 440 V
|
| 29 |
Which quantity must be the same for two bodies if they are to be in thermal equilibrium.
|
A. Internal energy
B. P.E
C. Temperature
D. Mass
|
| 30 |
An AND gate is.
|
A. Equivalent to a series switching circuit.
B. Equivalent to a parallel switching circuit
C. Equivalent ot universal gate
D. A reciprocal of NAND gate
|