Question # 1

The inkjet printer eject a thin stream of:

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Water

Oil

Ink

Any above

None of these

A succession of events which bring the system back to its initial condition is called

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reversible process

irreversible process

a cycle

none of them

The expression for restoring force is

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F=ma

F=kx

F= -kx

Kx=ma

The energy required to charge a capacitor of 5μF by connecting D.C. source of 20 KV is

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10 KJ

5 KJ

2 KJ

1 KJ

A ray passing through optical center of a lens, after refraction:

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Passes through focus

Go deviated

Retraces its path

Both B and C

A current of 1 ampere is passing through a conductor. The charge passing through it in half a minute s

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One coulomb

0.5 coulomb

30 coulombs

2 coulombs

None of these

A labourer carrying a distance a load on his head moves from rest on a horizontal road to another point where he comes to rest. He has done:`

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Minimum work

Maximum work

Zero work

Negative work

The energy stored in a charge capacitor

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1/2CV²

1/2C²V

1/2C/V²

None of these

When electrons in the transmitting antenna vibrate 94000 time per second, they produce radiowaves having frequency

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9.4 kHz

940 kHz

94 kHz

None of these

An electric charge at rest is

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Only an electric field

Only a magnetic field

Both electric and magnetic fields

None of the above

An alpha particle has a charge of

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+2e

-2e

-e

+3e

Light has:

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Wave nature

Particle nature

Dual nature

None of them

Newtons third law also says that action and reaction forces always act on the

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Different bodies

Same bodies

Only one body

None of these

The fundamental frequency of a closed organ pope is 50 Hz. The frequency ofsecond over tone is

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100hz

150hz

60hz

250hz

Diamagnetic substances are those in which

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Spin and orbital motions are supported

Spin and orbital motions are opposed

Resultant of spin and orbital motion is zero

None of these

Angular displacement is a vector quantity for

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Small value of Δθ

Very small value of Δθ

All values of Δθ

None of these

Substances which undergo plastic deformation until they break are called:

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Ductile

Brittle

Malleable

Soft

Hard

Two forces of 4 dyne and 3 dyne act upon a body.The resultant force on the body can only be

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Between 3 and 4 dyne

Between 1 and 7 dyne

More than 3 dyne

More than 4 dyne

Angular velocity is a

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Scalar quantity

Vector quantity

Constant quantity

None of these

Ray optics is valid,when characteristic dimensions are

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Of the same order as the wavelength of light

Much smaller than the wavelength of length

Of the order of one millimeter

Much larger than the wavelength or light

In Young s experiment the distance between two adjacent fringes for blue light is than that for green light

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Lesser

Greater

Equal

Lesser if distance between source and screen is large

On heating, glass gradually softens into a paste-like state before it becomes a very viscous liquid at almost

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600°C

7600°C

800°C

900°C

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