Question # 1

In a normal healthy person the value of diastolic pressure is

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75 - 80 torr

100 torr

120 torr

none of them

When a shell explodes in mid-air, its fragments fly off in

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only one direction

in two direction

different directions

a particular direction

The fluid which is incompressible and non viscous is called

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Ideal fluid

Non-ideal fluid

Prefect fluid

All

Solar cell converts sunlight directly into

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potential energy

thermal energy

mechanical energy

electrical energy

Transformer is used to

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Increase alternating current

Increase d.c voltage

Increase & Decrease emf

All answers are right

Kirchhoff's first rule is also called:

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Loop rule

Thumb rule

Point rule

Right hand rule

None of these

Binding energy per nucleus is

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greater for heavy nucleus

least for heavy nucleus

greatest for light nuclei

decreases for medium weight niclei

Coulomb's force between two point charges depends upon

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Magnitude of charges

Distance between them

Medium in which they are located

All of the above

A car is moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed v of the car is:

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38 m/sec

3.8 m/sec

0.6 m/sec

None of these

In which of the following components, pn-junction is used

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light emitting diode

photo diode

photo voltaic cell

all of these

A fuse wire is having 5 ampere current rating. What is the peak value of current it can have?

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0.7074 A

7.07 A

0.0707 A

7.707 A

Torque is defined as:

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Time rate of change of angular momentum

Time rate of change of linear momentum

Time rat of change of angular veloctiy

All of these

The unit of focal power of a lens is

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Watt

Horse power

Dioptre

Kilo watt

Mathematically the first condition for equilibrium can be expressed as

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ΣF_x = 0

ΣF_y = 0

ΣFx = 0 and ΣF_y = 0

ΣFx = 0 or ΣF_y = 0

Examples of crystalline solids are:

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Copper

Zirconia

NaCI

All of these

Both A and B

The length of the standard metre measured by Michelsion's interferometer comes out to be

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1,553, 163.5 wavelength

1553.5 wavelength

155316.5 wavelength

none of them

In Bragg's Equation 2d sin θ = nλ, where 'n' is

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Order of spectrum

Number of reflections

Order of reflection

None of these

Tick the one which is not a crystalline solid:

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Zirconia

Glass

Copper

Ceramic solid

An ionic compound

Electric potential of earth is taken to be because earth is a good

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insulator

Conductor

Semi-conductor

Dielectric

The structure of the polymeric solid is:

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An ordered structure

A disordered structure

Intermediate between order or disorder

Any of these

None of these

As isolated system in which

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No internal force acts

No external force acts

No internal and external force acts

None of these

Pressure may be defined as_____per second per unit area:

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Change in force

Change in momentum

Change in energy

Work done

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