Question # 1

Liquid pressure at depth h is:

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p/gh

h/pg

pgh

i/pgh

Unit of thermal conductivity is .

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Wmk

W m^-1 K^-1

Wm

None of these

Motion of the rocket is the example of which law?

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First law

Second law

Third law

Law of momentum

The product of mass and _______ is called momentum;

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Velocity

Force

Acceleration

None

Co-efficient of friction between glass and glass.

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1.0

0.9

1

0.8

The type of hydrometer which is used to measure the concentration of acid in a battery is called:

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Chemical meter

Acid meter

Barometer

pH meter

The unit of weather in map is :

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°C

°F

K

mbar

Moon complete it's one revolution around earth is days:

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22

23

27.3

25

The value of g at a height one Earth's radius above the surface of the Earth is

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2 g

1/2 g

1/3 g

1/4 g

What will be the magnitude of work if a force of 25N pulls a stone through a distance of 5 m in its directions

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25 J

50 J

75 J

125 J

The unit of π is:

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N

m

s

None

In totally reflecting prism one angle is of:

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45°

90°

180°

120°

In D.C.motor split rings are made of:

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Steel

Carbon

Copper

Iron

Public address system is the example of :

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Analogue electronics

Digital electonics

Binary system

None of these

Thermocouples convert:

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Heat energy into electrical energy

Heat energy into light energy

Heat energy into mechanical energy

Chemical energy into electrical energy

To see from submarine and the ship at the surface of water, we use:

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Telescope

Microscope

Periscope

Prism

The output of a two input NOR gate is 1 when:

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A is 1 and B is 0

A is 0 and B is 1

Both a and b are 0

Both a and b are 1

According to Fleming's left hand rule the direction of force on the conductor is given by:

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Thumb

Fore finger

Middle finger

None of these

High pitch means:

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High wavelength

High frequency

High time period

High energy

The motion in which the friction reduces the mechanical energy of the system as times passes and the amplitude of motion reduces is called:

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SHM

Randum motion

Damped motion

None of these

Floppy has a storage capacity

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4-5 MB

3-4 MB

1-3 MB

3-6 MB

Analogue quantity is:

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Time

Pressure

Distance

All of these

The Unit of decay constant.

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Second

(second)-1

m-1

mk

In 'N' type material, the minority charge carriers are.

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Free electrons

Holes

Protons

Mesons

Photodiode is used for wave nature of.

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Light

Thermal radiation

Radi waves

Sound waves

In a coil current change from 2 to 4 A in .05 s . If the average induced emf is 8 V then coefficient of self-inductance is:

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0.2 henry

0.1 henry

0.8 henry

0.04 henry

The illustration of the phenomenon of mutual induction is in the device of

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Transformer

Inductor

A.C. Generator

Ammeter

For Holography we use

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X ray

Laser

gama rays

Beta rays

If a charge body moved against the electric field it will again

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Potential energy

K.E

Mechanical Energy

Electric potential energy

Which series lies in the ultraviolet region.

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Balmer series

Bracket series

Ptund series

Lyman series

The first spectral lines were discovered in 1885, were

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Paschen series

Balmer series

Pfund series

Bracket series

A pair of quark and anti quark makes a.

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Meason

harden

Lapton

Baryon

For ohmic device the graph between V and I is.

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A straight line

Curve

Hyperbola

Parabola

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