Question # 1

Bernoulli's equation is applicable for

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turbulent flow

streamline flow

both (a) and (b)

all kinds of flows

Huygen's principles states that:

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Light travels in straigth line

Light has dual nature

Either of these

None of these

At constant temperature, if the density of the gas is increased, its pressure will:

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One kg of a substance

Unit volume of a substance

One mole of a substance

None of these

The term drift velocity is used when the ends of a wire are:

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Connected to a laser source

Connected to a voltage source

Not connected to a voltage source

At different values of potential

Both (B) and (D)

The capacity of a parallel plat capacitor depends on the

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Type to metal used

Thickness of plates

Potential applied across the plates

Separation between the plates

The acceleration of body executing SHM is directly proportional to

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Applied force

Amplitude

Displacement

Frictional force

Which waves are used in sonography?

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Microwaves

Infra red waved

Sound waves

Ultrasonic waves

Alfa particles are

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hydrogen nuclei

helium nuclei

electrons

photons

Which one of the following has larger value of relative permitivity E_rat room temperature?

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Vaccum

Air

Glass

Water

Conventionally the angular velocity is directed at an angle of

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90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

Blood pressure is measured by the instrument

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stethoscope

sphygmomanometer

barometer

none of them

For interference to occur,the interfering beams of light must be

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Of different frequencies

Coherent

White light

Added

Which of the given elements is a diamagnetic material

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Antimony

Bismuth

Copper

All of these

In a semi-conductor material, the total current is

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only the +ve current

only the electronic current

sum of +ve and electronic current

all of them

If the red light is replaced by blue light illuminating the object in a microscope the resolving power of the microscope

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Decreases

Increases

Gets halved

Remains unchanged

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

Frequency of red colour as compared to that of violet colour is:

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Equal

Smaller

Greater

None of these

Which of the Following bulb will glow Brightest?

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100W

200W

300W

400W

SI unit of potential difference is volt it can be written as

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JC^-2

JC^-1

JC

J.A

When m₁and m₂and V₂= 0 then velocities become

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V'₁= 0 and V'₂= V₁

V'₂= 0 and V₁= V'₁

V₁= 0 and V'₁= V₂

None of these

The Bernoulli's equation is based on the

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Law of conservation of energy

Law of conservation of mass

Law of conservation of momentum

None of these

Bulk modulus for water is

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2.2

4.5

6.2

7.3

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