Question # 1

Aerodynamics is a branch of

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Hydrodynamics

Thermodynamics

Both of them

Statics

The domains are of macroscopic size of the order of

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centimeters

meters

millimeters

nanomneters

In an interference pattern of Young's double slit(YDS) experiment:

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Bright fringesare wider than dark fringes

Dark fringes are wider than bright fringes

Both dark and bright fringes are of equal width

Central fringes are wider than the outer fringes

The force exerted by the fluid in a hydraulic pump on the piston is 10 cm², the fluid pressure on the piston is, in N/cm²

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20

200

2000

20,000

In magnet-coil experiment, emf can be produced by:

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Keeping the coil stationary and moving the magnet

Keeping the magnet stationary and moving the coil

Relative motion of the loop and magnet

Any one of above

All above

Amplitude in SHM is equivalent to ______ in circular motion

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Diameter

Radius

Circumference

None of these

The charge carriers in electrolyte are positive and negative

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protons

electrons

ions

none of these

Viscosity is defined as

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the friction between fluid and its container's walls

the internal friction between two layers of fluid

the resistance to flow a fluid experiences

the extent to which outside factors effect the fluid's flow

Work is product of:

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Force and velocity

Heat and energy

Force and displacement

None of these

Which of the following is not thermo dynamical function?

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Enthalpy

Work done

Gibb's energy

Internal energy

Work is a

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Scalar quantity

Vector quantity

Base quantity

None of these

J.J Thomson finds:

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Particle nature of the electron

Dual nature of electron

Wave nature of electron

Electromagnetic nature of electron

The viscosity of fluid is described by

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Resistive forces of fluid

Frictional effect between different layers of a fluid

Flowing speed of fluid

None of these

If m means mass of gases ejected per second from a rocket and v shows the change in velocity, then mv is named as:

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Force

Energy

Work

Impulse

A science student takes 100 observations in an experiment Second time he takes 500 observations in the same experiment By doing so the possible error becomes

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5 times

1/5 times

Unchanged

None of these

Velocity of a body changes if

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direction of motion the body changes

speed of the body changes

neither speed nor direction changes

either speed or direction changes

A single step index fibre can carry more than

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14 TV channels

14,000 phone calls

16 TV channels

a and b

The Bernoulli's equation often expressed in

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P + ρV² + ρgh = constant

P + 1/2 ρV + ρgh = constant

P + 1/2 ρV² + ρgh = Constant

P + 1/2 ρV² + gh = constant

Physical sciences deals with

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Living things

Nonliving things

Both living and non- living

Non of these

In old age, arteries carrying blood in the human body become narrow resulting in an increase in the blood pressure. This follows from

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Pascal's law

Stoke's law

Bernoulli's principle

Archimedes principle

Whenever a covalent bond is broken in an intrinsic semi-conductor

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hole is created

an electron is created

an electron hole is generated

all of them

With the rise of temperature the amplitude of atoms

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Slow down

Fixed

Increases

None of these

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