Question # 1

Experiments revealed that the ratio of the stress to the strain is a constant value for

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different material

all materials

a given material

all of them

One newton is a force that produces an acceleration of 0.5 m/sec²in a body of mass:

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2 Kg

3 Kg

4 Kg

8 Kg

The displacement coincides with the path of the motion when a body moves is a

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curved line

straight line

may be curved or straight

none of them

Which quantity has the same units as impulse

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force

work

linear momentum

acceleration

The power dissipation in a pure inductive or capacitance circuit is

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maximum

positive

zero

none

A particle of mass 5.0 mg moves with a speed of 8.0 m/s. Its de-Brogile wavelength is

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1.66 m

1.66 x 10^-10m

1.66 x 10^-29cm

1.66 x 10^-29m

If a simple pendulum is shifted from karachi to K-2 cliff, its time period

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remains the same

decreases

increases

none of them

We can express the work in term of

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directly measurable variables

indirectly measurable variables

either of them

both of them

The principle of superposition states that

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The total displacement due to several waves is the sum of the displacement due to those waves acting individually

Two stationary waves superimpose to give two progressive waves

A diffraction pattern consists of many interference patterns superimposed on one another

Two progressive waves superimpose to give a stationary wave

Glass is an example of

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crystalline solid

amorphous solid

polymeric solid

none of them

If two forces of magnitudes 3.5 and 2.5 N act on a body such that the angle between the forces is zero, then magnitude of the resultant will be:

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1.0 N

6 N

3.5 N

12 N

The pressure of gas everywhere inside the vessel will be the same provided the gas is of

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Non-uniform density

uniform density

high density

low density

Which of the following has the greatest coefficient of viscosity?

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water

gasoline

honey

tar

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

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Real

Virtual

Diminished

Erect

The number of countries who manage the largest satellite system is:

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3

24

126

200

The induced emf in a coil is proportional to:

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Magnetic flux through a coil

Rate of change of magnetic flux through the coil

Area of the coil

Product of magnetic flux and area of the coil

The entire wave form of sinusoidal voltage is actually a set of all the:

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Positive maximum value + V_oand negative maximum value -V_o

Posiotive maximum value +V_oand zero

Zero and negative maximum value -V_o

Any of these

None of these

Heat travels through vacuum by

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Conduction

Convection

Radiation

Both A and B

The current produced by moving a loop of a wire across a magnetic field is called:

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Direct current

Magnetic current

Alternating current

Induced current

None of these

The path (or trajectory) described by a projectile is

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a parabola

a hyperbola

a circle

a straight line

Those quantities which can be measured accurately are known as

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Physical Quantities

Scalar Quantities

Vector Quantities

Non Physical Quantities

Velocity of a body changes if

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direction of the body changes

speed of the body changes

neither speed nor direction changes

either speed or direction changes

Electric flux is:

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Cross product of two vector

Dot product of two vectors

A vector quantity

A scalar quantity

Both (B) and (D)

The process of formation of spectrum is called:

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Interference

Spectroscopy

Dispersion

Reflection

Botha (A) and (D)

The fluid is incompressible, if itsdensity is

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zero

constant

very high

very small

Structure of the nucleus was explained by

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J.J Thomson

Bohr

Millikan

Rutherford

If the velocity time graph is a straight line parallel to the time-axis, then it means:

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The body is moving with uniform velocity

The body is moving with uniform acceleration

The body is at rest

None of these

The path described by a projectile is called its

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orbit

trajectory

range

distance

The state in which ice, water and vapour coexists in equilibrium is called

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zero degree celsius

zero degree fahrenheit

absolute zero

373 K

The decrease in velocity per unit time is called:

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Variable Acceleration

Average Acceleration

Retardation

None of these

A heavily damped system has a fairly

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sharp resonance curve

flat resonance curve

both of them

none of them

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