Question # 1

Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:

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Peak value

RMS value

Instantaneous value

Peak-to-peak value

Both (A) and (C0

Balmer series was identified in:

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1685

1785

1885

1985

1585

In an A.C. circuit, a resistance of R ohm is connected in series with an inductance L. If phase angle between voltage and current be 45°. the value of inductive reactance will be

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R/4

R/2

R

Cannot be found with the given data

Centripetal force performs:

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Maximum work

Negative work

Positive work

None of these

The product of force and time is called

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acceleration

linear momentum

angular momentum

impulse

In a voltmeter the conduction takes place due to

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Electrons only

Holes only

Electrons and holes

Electrons and ions

When a mass attached to a spring begins to move left or right from the equilibrium position, its P.E.:

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Increases

Decreases

Remains constant

None of these

Field lines are closer to each other in the region where the filed is

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Stronger

Weaker

Much weaker

Absent

None of these

Blood vessels can be stretch like rubber, therefore they are

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rigid

hard

very thick

not rigid

The surface destiny of charge is defined is:

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Charge per volume

Mass per volume

Charge per area

Mass per area

Both (B) and (C)

In vibrational motion(SHM)

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P.E remains conserved

Average K.E remain constant

Neither P.E nor K.E remains constant

Total energy remains constant

The lowlying Earth satellites have acceleration

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9.7 ms^-2

9.9 ms^-2

10.0 ms^-2

9.8 ms^-2

In cause of YDS experiment, the distance between adjacent bright fringes is given by

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Δy =λL/d

ΔY = L/λd

ΔY =λ/L

None of these

At the top of the trajectory of a projectile the directions of its velocity and acceleration are

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Perpendicular to each other

Parallel to each other

Inclined to each other at an angle of 45°

Antiparallel to each other

The clouds float in the atmosphere because of

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Their low temperature

Their low viscosity

Their low density

Creation of low pressure

Polymers have naturally combinations like with

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Oxygen

Sulphuric

Hydrocarbons

Oxygen and carbons

A force of 10N is required to move a body with a velocity 10 ms^-1the power developed is

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10 W

50 W

100 W

1000 W

The uniformly accelerated equations are useful only for

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Angular motion

Curved motion

Linear motion

None of these

Fluids resist force this property is called

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Stiffness

Strength

Ductility

Elasticity

Dimensions of velocity are

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[L]

[T]

[LT^-1]

[LT^-2]

The regular array of atoms in a crystal has spacing of the order of

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10^-16m

10^-14m

10^-10m

10^-6m

The effect is to increase the inflation the bag is

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To compress the blood vessels

To increase external pressure

To cut off the flow of blood

All of these

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