Question # 1

At any point on the right bisector of the line joining two equal and opposite charges

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At electric field is zero

The electric potential is zero

The electric potential decreases with increasing distance from the centre

The electric field is perpendicular to the line joining the charges

Which quantity has the same dimension as that of impulse?

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KE

Power

Momentum

Work

The Phenomenon of generation of induced emf is called

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Electrostatic induction

Magnetic induction

Electromagnetic induction

Electric induction

Both A and B

In a cubic crystal, All solids meet at:

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60^o

90^o

109^o

30^o

10^o

The bonding between the semi-conductor materials is

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covalent

ionic

either of them

none of them

Which branch of physics deals with the structure and properties of solids

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Atomic Physics

Plasma Physics

Molecular Physics

Solid state physics

The unit of induced emf is:

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Volt

Nm/As

Joule coul^-1

Both A and C

All of these

The circuit in which current and voltage are in phase, the power factor is

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zero

1

negative

0.83

The sum of the magnitude of two forces acting at a point is 18 and the magnitude of their resultant is 12. If the resultant is at 90° with the force of the smaller magnitude, then their magnitudes are

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3, 15

4, 14

5, 13

6, 12

In photoelectric effect the energy of ejected electrons depend on

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The frequency

The intensity

Both frequency and intensity

None of these

In an adiabatic expansion, the temperature of the gas

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increases

becomes zero

decreases

decreases rapidly

During the projectile motion, the horizontal component of velocity

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changes with time

remains constant

becomes zero

decreases with time

The terminal velocity of water droplet of radius 1 x 10^-4m and desity 1000 kg m^-3descending through air of viscosity 19 x 10^-6kg. m^-1s^-1is

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2.5 ms^-1

3.2 ms^-1

4.3 ms^-1

1.1 ms^-1

The machines which deals with the objects moving with velocities approaching that of light is called:

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Relativistic mechanics

Wave mechanics

Quantum

Statics mechanics

The spectrum emitted from hydrogen filled discharge tube is:

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Line spectrum

Discrete spectrum

And spectrum

Absorption spectrum

Both (A) and (B)

A certain charge liberates 0.8 g of oxygen. The same charge will liberate. how many g of silver?

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108 g

10.8 g

0.8 g

108/0.8 g

The curve representing an adiabatic process is called

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isotherm

adiabat

adiable

none of them

When the object lies between F and 2F, the image formed by is formed at:

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Real

Virtual

Diminished

Erect

The ability of the body to return to its original shape is called

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deformation

stretching

compressing

elasticity

In compressional wave,the layer of medium having reduced pressure is called:

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Compression

Elasticity

Node

Rarefaction

A point on the rim of a wheel moves 0.2 m where the wheel turns through an angle is 14.3 degrees. The radius of the wheel is:

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0.05 m

0.08 m

0.8 m

0.008 m

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

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R

R²

1/R

(1/R)²

Work done along a closed path in a gravitational force is:

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maximum

Minimum

Zero

Unity

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

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equal to the resonant frequency

slight different from the resonant frequency

greatly different from the resonant frequency

any one of them

The smallest three dimensional basic structure in a crystalline solid is called

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lattice point

crystal lattice

cubic crystal

unit cell

Work done is independent of path followed in _______

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Gravitational field

Magnetic field

Electric field

All of these

Glass and high carbon steel are the examples of

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brittle substances

ductile substances

plastic substances

elastic substances

One torr is equal to

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13.33 N/m²

760 N/m²

760 mm Hg

133.3 N/m²

The unit of magnetic flux is

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Weber-m²

Weber-m³

Henry

Weber

A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be

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64 W

80 W

100 W

125 W

A real gas can be approximated to an ideal gas at

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Low density

High pressure

High density

Low temperature

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