Question # 1

A particle of mass 0.5 g moving along x-axis is located of x₁= 15 m at t₁= 5s and x₂= 33 m at t₂= 13s its average velocity is

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6 m s^-1

2.45 m s^-1

2.25 m s^-1

4.45 m s^-1

The Instantaneous value of alternative current maybe:

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The same as its RMS value

Greater than its Rms value

The same as its peak value

Any of these

None of these

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

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stethoscope

thermometer

manometer

barometer

A body moving with uniform velocity has

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positive acceleration

negative acceleration

infinite acceleration

zero acceleration

Wave length of that color as compared to that of violet color is:

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Smaller

Longer

Equal

None of these

Majority charge carriers in the p-region of p-n junction are:

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electrons

positrons

Holes

Neutrons

None of these

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

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constant rate

volume rate

flow rate

steady rate

Two forces each of the magnitude F act perpendicular to each other. The angle made by the resultant force with the horizontal will be:

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30°

45°

60°

90°

The principle characteristics of an ideal standard are

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Inaccessible and Invariable

Accessible and Invariable

Accessible and Variable

None of these

A diatomic gas molecule has

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translational energy

rotaional energy

vibrational energy

all of them

Which quantity has different dimension:

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Work

Pressure

Energy

Torque

To see the minor details of the object by microscope, it should have:

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High magnifying power

High resolving power

Am objective of larger focal length

None of these

The nucleus left after the emission of some radiation is called:

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Parent nucleus

Daughter necleus

Mother necleus

Any of these

None of these

Adiabatic change occurs when the gas

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expands

compressed

expands or compressed

expands or compressed rapidly

The locus of all the points in the same phase of vibration is called:

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Wave packet

Wave front

Wave number

None of them

The magnetism produced by electrons within an atom can arise from

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electrons orbiting the nucleus

electrons posses a spin

both motions

none of these motions

The information from far side of the universe are gathered by:

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Radio telescope

Microscope

Telescope

Spectro scope

Carnot heat engine only used

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isothermal processes

adiabatic processes

both of them

none of them

The area under line velocity-time graph is numerically equal to the

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speed of the body

acceleration of the body

distance covered by the body

none of them

the dilation of time applies to the timing processes which are:

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Physical

Chemical

Biological

All of these

None of these

Good absorbers of heat are

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Poor emitters

Non emitters

Good emitters

Highly polarized

On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves

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outwards

inwards

in either way

none of these

Drag force increases if speed of the object moving through the fluid:

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Increases

Decreases

Remains constant

None of these

A reversible cycle is the one in which

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some of the changes are reversible

all of the changes are reversible

all of the changes are irreversible

none of them

A circuit has a resistance of 11Ωan inductive reactance of 25Ωand a capacitance reactance of 18Ω. It is connected to an a.c. source of 200 V and 50 Hz. The current through the circuit (in amperes) is

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11

15

18

20

The un-steady streamline flow is called

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laminar flow

turbulent flow

both of them

none of them

Energy is not carried by

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Transverse progressive waves

Longitudinal vibration

Stationary waves

Electromagnetic

The henry is the unit for

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Resistance

Magnetic flux

Magnetic field

Inductance

Zirconia is classified as:

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Ceramic solid

Ionic compound

Metal

Either (A) or (B)

Either (B) or (C)

The work done moving a body between two points in a conservation field is independent of the:

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Direction

Force applied

Path followed by the body `

Power

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

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Equal to 1

Less than 1

Greater than 1

Infinity

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