Question # 1

The electric field due to an infinite long thin wire at a distance R varies as

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1/R

1/R²

R

R²

When the speed of a body in a fluid increases then the drag force

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decreases

becomes zero

increases

non of them

A massive object falls through a fluid:

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Faster

Slower

Slowest

None

If the values of instantaneous and average velocities are equal, the body is said to be moving with

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uniform acceleration

uniform speed

variable velocity

uniform velocity

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

The combined effect of resistance and reactance in a.c. circuit is called

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conductance

resistance

impedance

choke

A typical rocket consists of fuel

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more than 60% of launch mass

less than 60% of launch mass

less than 80% of launch mass

more than 80% of launch mass

Absolute temperature can be calculated by

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Means squares velocity

Motion of the molecule

Both A and B

None of these

Crystalline solids are in the form of:

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Metals

Ionic Compounds

Ceramics

Both (A) and (B)

All of these

Swimming becomes possible because of______law of motion.

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First

Second

Third

None of these

If the value of C in a series RLC circuit is increased, the resonant frequency

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Is not affected

Increase

Remains the same

Decreases

For a gas obeying Boyle's law, if the pressure is doubled the volume becomes:

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One half

Double

Four times

None of these

The blood vessels are inflated eve in

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Relaxed states between heart beat

Working state between hear beat

Occasionally

None of these

The S.I. unit of angular displacement is

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Degrees

Revolution

Radian

All of them

The colour of light is determined by is

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Wavelength

Frequency

Velocity

Amplitude

The motion in a plane is the motion in

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one dimensions

two dimensional

three dimensional

all of them

Conventionally, all the distances p, q, f, are measured from ______ of the lens

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Focus

Optical center

Edges

Centre of curvature

The drag force increases as the speed of the object

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Decreases

Increases

Decreases rapidly

None of these

If the values of instantaneous and average velocities are equal, the body is said to be moving with

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uniform acceleration

uniform speed

variables velocity

uniform velocity

A ball whose kinetic energy E, is thrown at an angle of 45° with horizontal,its kinetic energy at highest point of flight is

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E

E / √2

E/2

Zero

Supplementary unit/units in S.I. Units are

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Radian

Steradian

Candela

a and b

In Young's double slit experiment, the fringe width depends on

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wavelength of the light used

distance between the slits and screen

distance between the slits

all of them

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