Question # 1

At night , the air from land to begins towards sea called:

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Land breeze

Sea breaze

Both A and B

Radiation

Flow of thermal energy from hot body cold body is called:

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Specific heat

Latent heat

Transfer of heat

Heat capacity

A string is stretched by two equal and opposite forces 10 N each. The tension in the string is

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Zero

5N

10N

20N

Weight of the body is due to the :

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Gravitation force

Centripetal force

Centrufugal force

All of the above

When ice is cooled below 0 ^oC it:

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Expand

Contracts

Boils

None of these

There are ways to transfer the heat from one place to another.

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1

2

3

4

States of equilibrium are:

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2

3

4

5

The slope of distance time graph shows.

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Speed

Displacement

Acceleration

Distance

From following, which one is a renewable source of energy?

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Coal

Gas

Sunlight

Petrolum

At what angle sin𝜽 and cos𝜽 has same values:

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30^o

45^o

60^o

90^o

The force exerted perpendicularly on unit of area of an object is called:& nbsp

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strain

young's modulus

pressure

buoyant force

the time period of body attached to spring depend on:

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mass

gravitational constant

length

amplitude

The waves which travel in straight line through space and have strong signals are called:

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Micro waves

Mechanical waves

Light waves

Magnet waves

the resistance of an ammeter should be:

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high

very high

low

constant

The SI unit of electric field intensity is:

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NC-2

NC-1

Ns

Nm-1

Mathematical formula of sound level (in bel) is:

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S.L = 10 log I/Io (bel)

S.L = K log I/Io (bel)

S.L = Log I/Io (bel)

S.L = 10 log Io/I (bel)

Nichrome wire is an alloy of:

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Lead and zinc

Silver and copper

Nickel and chromium

Iron and copper

The logical operation performed by this gate is:

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AND

NOR

NAND

OR

When resistances are connected in parallel, the current passing through them is:

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Same

Zero

Different

Infinite

When a potential of 10 volt is applied across a conductor, a current of 5 miliampere flows through it, the resistance of the conductor will be:

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200 ohm

2000 ohm

0.2 ohm

0.002 ohm

The cathode ray oscilloscope consists of main parts:

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Two

Three

Four

Five

Which waves of the following has highest frequency?

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Radio waves

Micro waves

Light wave

Sound wave

If the time period of simple pendulum is 2 seconds its frequency will be.

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1 Hz

0.5 Hz

1.5 Hz

2 Hz

Pressure of fluid will be low where speed of fluid is.

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Low

Zero

High

Constant

Frequency range of hearing of cats is.

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20-20000 Hz

10- 10000 Hz

60-20000 Hz

60-70000 Hz

The process of confining the beam of light to vibrate in one plane is called.

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Interference

Diffraction

Polarization

Total internal refraction

Einstein's theory gives us the physical picture of how the

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Body moves

Gravity works

Moment of inertia produced

Weightlessness creates

The dimensions of work are.

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[MLT-1]

[MLT-2]

[ML2T-2]

[MLT]

1 KWh =

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3.6 x 10³K

3.6 x 10⁶K

3.6 x 10⁹J

3.6 x 10¹²J

When the projectile reaches the highest point of trajectory, the vertical component of velocity becomes.

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Small

Zero

Maximum

Vi cos

The concentration of red blood cells in the blood is nearly.

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40%

60%

25%

50%

Slope of velocity time graph describes a physical quantity called.

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Displacement

Average velocity

Average acceleration

Momentum

The Carnot cycle can be shown by which graph

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P - T graph

P - V Graph

V- T graph

PV -T graph

For ohmic device the graph between V and I is.

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A straight line

Curve

Hyperbola

Parabola

In three phase A.C supply coils are inclined at an angle of.

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0^o

90^o

120^o

80^o

Commutator was invented by:

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William bills

William Gates

William tells

William Sturgeon

Power dissipated in a pure inductor is.

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Large

Small

Infinite

Zero

The peak value of alternating current is 5√2 A. The mean square value of current will be:

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5A

2.5A

5√2A

5²

Greater concentration of impurity is added in.

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Base

Emitter

Collector

LED

The temperature at which, semiconductor behaves as insulators:

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10k

0k

237k

None of above

Resistance tolerance for gold colour is.

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50%

30%

20%

5%

If the number of turns become double but length remain same, then magnetic field in the solenoid become.

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Half

Double

Remain same

Zero

The toner of printer is given

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Positive charge

Negative charge

Neutral

First positive then negative

The reverse saturation current in a PN junction diode is only due to:

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Majority carriers

Minoritycarriers

Acceptor ions

Donor ions