Question # 1

Xerography means:

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Dry writing

Wet writing

Poor writing

Excellent writing

Both (A) and (B)

Example of vibratory motion is

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mass suspended from a spring

a bob of simple pendulum

mass attached to a spring placed

all of them

How much force is required to slide one layer of the liquid over the other layer is measured by

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friction

density

viscosity

resistivity

Which of the following options states the names of fluids in the order of increasing viscosity?

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mercury, motor oil, methanol

methanol, mercury, motor oil

motor oil, mercury, methanol

methanol, motor oil, mercury

There is no way to detect:

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Absolute uniform motion

Accelerated motion

State rest

State of motion

None of these

In L.C.R series A.C. circuit, the phase angle between current and voltage is

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Any angle between 0 and +π/2

π/2

π

Any angle between 0 andπ/2

The doped semi-conductor materials are known as

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intrinsic semi-conductor

extrinsic semi-conductor

either of them

none of them

If force and displacement are in opposite direction, the work done is taken as

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Positive work

Negative work

Zero work

Infinite work

The study of physics involves?

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Structure of space and time

Interaction of electromagnetic radiation with matter

Both of them

Chemical changes

None of them

When a conductor moved with its length parallel to the lines of magnetic fled:

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An emf is induced across its ends

Emf induced is similar to that of a battery

Emf passes through the conductor

Both A and B

None of these

The reciprocal of decay constant λ of a radioactive material is:

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Frequency

Half life

Year

Mean life

None of these

In a straight current carrying conductor, the direction of magnetic field can be found by

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right hand rule

left hand rule

head to tall rule

none of these

When a body moves with a constant speed in a circle:

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No work is done on it

No acceleration is produced in the body

Velocity remains constant

None of these

The dimension of linear inertia is:

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MLT²

ML⁰T^-2

ML⁰T⁰

MLT^-1

Triple point of water is

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273.16°F

372.16K

273.16°F

273.16

The use of chips in electrons is described in the form of:

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Yellow boxes

Black boxes

Red boxes

White boxes

Orange boxes

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

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Two

Three

Four

Five

An induced current can be produced by

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Constant magnetic field

Changing magnetic field

Varying electric field

Constant electric field

None of these

The phase at the positive peak of an A.C. cycle is:

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0º

90º

180º

0 andᏘ

Ꮨ/2 and 3Ꮨ/2

When radioactive nucleus emits aβ-particle, the proton-neutron ratio

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decrease

increase

same

none of these

Strength of magnetic field is measured in SI units, in:

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N

N/Am

Am/N

Nm/A

None of these

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

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IT = 10^-4G

IT = 10⁵G

IT = 10³G

IT = 10⁴G

The transition from solid state to liquid state is:

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Abrupt

Slow

Continous

Discontinous

Both (A) and (D)

At 'resonance' the transfer of energy from deriving source to the oscillator is

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maximum

minimum

zero

none of them

The time required for a radioactive material to decrease in active by one half is called

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half time

half life

disintegration time

mean life

The value of the plank's constant 'h' is given by

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1.6 x 10^-19J

1.67 x 10^-27Kg

6.63 x 10³⁴Js

6.63 x 10^-34Js

In crystalline solids, atoms are held about their equilibrium positions depending upon the strength of:

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Adhesive force

Nuclear forces

Inter atomic cohesive force

Electromagnetic force

None of these

The terms phase difference and path difference are:

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Same

Different

Equal

None of these

The waveform of alternating voltage is a:

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Square

Rectangular

Saw-tooth

Sinusoidal

None of these

A diode which can turn its current ON and OFF in nono seconds is called:

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LED

Photodiode

An ordinary diode.

Both (A) and (B)

Both (B) and (C)

When a force is applied on a body, several effects are possible Which of the following effect could not occur?

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the body rotates

the body speeds up

the mass of the body decreases

the body changes its direction

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