Question # 1

If the vector 5 N lies along with x-axis, then its component along y-axis will be:

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Zero

5 N

7 N

10 N

A body moves a distance of 10 m among a straight line under the action of a force of 5 N. If the work done is 25 J, the angle which the force makes with the direction of motion of a body is:

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0°

30°

60°

90°

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

Which one of the least multiple:

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Pico

Femto

Nano

Atto

The example of irreversible process is

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slowly liquification

slowly evaporation

an explosion

all of them

The resistivity of a substance depends upon the

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length

mass

area

temperature

The time rate of change of displacement is called:

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Time

Acceleration

Speed

Velocity

A 100 Kg car is moving at the speed of 10 m/sec and comes to rest after covering a distance of 50 m. The amount of work done against the friction is:

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+5 X 10¹J

+5 X 10²J

+5 X 10³J

+5 X 10⁴J

The torque per unit twist of coil is called

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proportionality constant

gravitational constant

boltzman constant

coupling constant

The magnetic field outside the solenoid due to current is

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strong

zero

weak

uniform

A conducting wire is drawn to double its length. Final resistivity of the material will be

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Double of the original one

Half of the original one

One fourth of the original one

Same as original one

Newton's second law of motion is also called

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Law of inertia

Law of acceleration

Law of force

None of these

Maximum number of orders available with a grating is ______ grating element

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Independent of

Directly proportional to

Inversely proportional to

Equal to

A particle is moving along a circular path of radius 5 m with uniform speed 5 m/sec what will be the magnitude of centripetal acceleration when the particle completes half revolution

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10π m/sec²

5 m/sec²

10/π m/sec²

Zero

In the formula for velocity of efflux v = √2gh, h is the

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Height of liquid column from bottom of vessel

Height of orifice from the bottom of the vessel

Height of liquid column above the orifice

Height of the vessel

When the magnitude of the drag force becomes equal to the weight then net force acting on the the droplet is

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Zero

Maximum

Remains the same

None of these

The law of conservation is important in many sport like

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Diving

Gymnastics

Ice-skating

All of these

A line which represents the direction of travel of a wave is known as

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Wave front

Locus

Ray of light

Either b and c

The dimensions of the coefficient of viscosity are

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[ML^-1T¹]

[MLT]

[M^-1L^-1T¹]

[M⁰L⁰T⁰]

Laws of motion are not valid in a system which is

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inertial

non-inertial

at rest

moving with uniform velocity

Two wave of intensities I an 4I superpose then the maximum and minimum intensities are

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5I and 3I

9I and I

9I and 3I

5I and I

Fight of rocket in the space is an example of

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Newton's first law

Newton's third law

Newton's second law

all of them

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