Question # 1

Another mean of electric potential energy per unit charge is given by:

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Electric intensity

Potential gradient

Electric Flux

Potential difference

None of these

The information from far side of the universe are gathered by

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Radio telescope

Microscope

Telescope

Spectro scpe

A string is stretched between two points and is plucked at right angles to its length, the vibration produced is:

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Longitudinal wave

Transverse wave

No vibration at all

None of them

The half lie of radium-226 is

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238 years

4.5 x 10⁹days

1620 years

332 years

As the light shines on the metal surface, the electrons are ejected

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slowly

instantaneously

either of these

none of these

Centripetal acceleration is also called ________ acceleration

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Tangential

Radial

Angular

None of these

It two waves of amplitude 'a' produce a resultant wave of amplitude a, then the phase difference between them will be

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60°

90°

120°

180°

When a transistor is used as a switch the circuit in which the current is to be switched OFF and ON, is connected between the

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base and emitter

collector and emitter

base and collector

any one of these

Which is modified form of galvanometer

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potentiometer

battery

voltmeter

slide wire bridge

Most OP-AMP operates with

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+ 6 V supply

+ 10 V supply

+ 12 V supply

+ 24 V supply

When an oscillatory motion repeats itself, then this type of motion is called

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vibratory motion

constant motion

fixed motion

periodic motion

The strength of magnetic field around the current conductor is

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Smaller near the conductor

Greater near the conductor

Greater at the large distance from the conductor

Constant near and away from the conductor

Photoelectrons are emitted when ultraviolet light falls on:

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Casium

Silver

Potassium

Any of these

None of these

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

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BACosѲ

Zero

BA

BA sinѲ

None of these

The speed of the secondary wavelets as mentioned in Huygen's principle is _____ the speed of propagation of the wave itself.

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Equal to

Greater than

Smaller than

None of these

When a body is moves along a circular path with constant speed, it has an acceleration, which is always directed:

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Along the tangent

Toward the centre

Away from the centre

None of them

Referring to above figure, current in the coil P grows from zero to its maximum value:

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At the instant the switch is closed

At the instant the switch is opened

When switch is kept open

All of above

Neither of above

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

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3 more neutrons

3 more electrons

3 more protons

3 more ions

Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if

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They have the same potential

They have the same amount of charge

They have the same capacity

They have the same shape

The system international (SI) is built from _______ kind of unites

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Two

Three

Four

Five

The crystalline structure of NaCI is

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rectangular

hexagonal

tetrahedral

cubical

With the increase of temperature viscosity

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Increase

Decrease

Remains same

Doubles

The interior of a hollow charged metal sphere is a region which:

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Contain some magnitude of electric field

Is full of electric field lines

Is field-free region

Either (A) or (B)

None of these

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

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Maximum

Minimum

Zero

Very small

None of these

Glass is an example of

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crystalline solid

amorphous solid

polymeric solid

none of them

In RC series circuit the time during which the capacitor acquires 0.63 times the equilibrium charge is called

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Time constant

Decay constant

None of these

All of above

The number of input terminals of an op-amp is:

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One

Two

Three

Four

None of these

Direction of angular momentum is determined by:

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Right hand rule

Head to tail rule

Left hand rule

None of them

SHM is type of ______ motion

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Vibratory

Linear

Circular

None

The effect of applying a force on a moving body is to change

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its direction of motion only

its speed of motion only

both the direction and speed of motion

its inertia only

If the resistance of 2 ohm and 4 ohm are connected in parallel, the equivalent resistance will be

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6 ohm

4 ohm

zero ohm

1.33 ohm

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