Question # 1

A Joule can also be written as.

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kgms^-2

kgms^-1

kgms^-2S^-2

kgms^-2S^-3

The number of significant figuresin 0.00650 s are

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2

3

5

6

You throw a ,it opens fully underwater, spreading out its mesh evenly.Compared to the moment it left your hand, where in the net\s center of mass now.

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Unchanged from its position when thrown

At the same depth but slightly shifted horizontally

Higher is the water column

Loweer in the water column

Which thermometer is most suitable for recording rapidly varying temperture.

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Alcohol in glass thermometer

Thermocouple thermometer

Mercury in glass laboratory thermometer

Mercury in glass clinical thermometer

What is the best definitin of the term "theory", as it us used in sciecne.

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A theory is a guess or hunch about somethig that has occurred in nature

A theory is a comprehensive set of ideas explaining a phenomenon in nature

A theory is based on verifiable laws and can be proven true

A theory is a hypothesis that uses laws and observation to make an assumption.

A bucket having some water is revolved in vertical circle. Water does not spill out, even the bucket is upside down, due to.

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Centrifugal force on water

Weight of water

Inertial of water

Action and Reaction balance each other

If a body does not change its position with respect to some fixed point, then it will be in a state of.

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Motion

Uniform motion

Rest

Variable motion

Gases and liquids are categorized as.

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Liquids

Gases

Fluids

Solids

A thermometer has a narrow capillary tube so that it.

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Gives alarge chagne for a given temperture rise

Quickly responds to temperature changes

Can read the maximum temperature

Can measure a large range of temperature.

If a car doubles its speed, its kinetic energy will be

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Increased to four times

The same

Doubled

Increased to the three times

You are trying to loosen a nut using a spanner, but it is not working In order to open the nut, you need to.

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Use plastic and soft spanner

Use a spanner of small length

Insert a pipe to increase length of spanner

Tie a rope with spanner

The unit of (ρ) in formula R=ρ.L/a is______________.

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Ω

Ω-m

Ω-m²

Ω-m^-2

The time period of frequency and time period is equal to:

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v

1

0

λ

SI unit of electric potential is:

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watt

volt

coulomb

joule

At mean position kinetic energy of the ball is:

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Minimum

Zero

Maximum

10 J

The unit of potential difference is:

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Volt

Coulomb

Ampere

Joule

Which of the following is a method of energy transfer.

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Conduction

Reatiation

wave motion

all of these

Which of the following devices can be used to produce both a transverse and longitudinal waves:

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A string

A ripple tank

A helical spring (slinky)

A tuning fork

the phenomena which is used in applying paints on the surface of different articles is called:

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electroplating

electroscope

electrostatic induction

electrolytes

Electric field lines were introduced by:

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Faraday

Newton

Coulomb

Joule

The angle of which prism deviates the incident ray is called:

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angle of incident

angle of reflection

angle of deviation

angle of minimum deviation

The force applied on the mass attached with a spring is represented by:

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f_a

f_c

f_ext

f_s

The basic units in system international units are

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Theree

Seven

Five

Two

For a gas obeying Boyle's Law, if the pressure is doubled, the volume becomes.

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Double

Three fold

One half

Remains the same

In thermodynamics system internal energy decrease by 100 J and 100 J of work done on the system then heat lost will be.

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Zero

100 J

200 J

-200 J

the systolic pressure of normal healthy person is.

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120 torr

130 torr

115 torr

110 torr

Environmental crisis are also known as

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Population crisis

Entropy crisis

War crisis

Mass crisis

A stretched string 2 m long and it has 2 hopes of stationary waves hen the wavelength is

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4 m

2 m

3 m

1 m

The power needed to lift a mass of 5000 g to height of 1 m in 2 secnd is

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2.45 watt

24.5 watt

245 watt

2.45 watt

The acceleration of a projectile along x axis is.

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Zero

Increase

Decrease

Equal to 'g'

Vectors have

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Numerical value

Directional

Both a and b

None of these

Usually the x-axis is taken as

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Vertical axis

Horizontal axis

+ve axis

-ve axis

A typical rocket consumes fuel about

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40000 Kgs-1

30000 Kgs-1

20000 Kg s-1

10000 Kgs-1

The series in visible region is:

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Balmer series

Pfund series

Paschen series

None of above

1 rem =

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0.001 SV

0.01 SV

0.1 SV

1.01 SV

Energy needed to produce an electron hole in solid state detector is.

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1 to 2 eV

3 to 4 eV

6 to 7 eV

8 to 9 eV

The number of protons in any atom are always equal to the number of

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Neutrons

Electrons

Positrons

Mesoris

For inducing emf in a coil the basic requirement is that:

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Flux should link the coil

Change in flux should link the coil

Coil should form a closed loop

Both (b) and (c) are true

Magnetic effect of current is used

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To detect a current

To measure a current

In electric motor

All of above

Internal frame is a frame is which

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1st law holds

2nd law holds

3rd law holds

Kelvin's law holds

The Lenz's law fulfils.

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Law of conservation of energy

Law of conservation of charge

Law of conservation of momentum

Kirchhoff's law

Electro magnetic waves emitted from radio antenna are.

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Stationary

Longitudinal

Transvers

Both a and b

Glass and high steel carbon are example of.

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Ductile substances

Brittle substances

Soft substances

Hard substances

The input resistance of an op amplifier is.

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Low

High

Zero

Equal to output resistance