Question # 1

Two forces of 10N and 8N are applied simultaneously to a body. The maximum value of their resultant is:

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20 N

-2 N

18 N

36 N

Addition of 2.189 kg, 0.089 kg, 11.8 kg, and 5.32 kg gives the rounded off answer as:

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19.398

19.400

19.4

19.3

In a soft iron, domains are

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easily oriented along external field and do not return to original random positions

easily oriented along external field and readily returns to originally random position

do no oriented along external field and also do not returns to originally random position

none of them

In a charged capacitor the energy is stored in

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Both in positive and negative charges

Positive charges

The edges of the capacitor plates

The electric field between the plates

The space around the earth within it exerts a force of attraction on other bodies of known as:

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Nuclear field

Conservative field

Electric field

Gravitational field

The minimum wavelength of X-rays produced of 1KV potential difference is applied across the anode and cathode of the tube is

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1.24 x 10^-10m

7.92 x 10^-20m

2.78 x 10^-14m

3.88 x 10^-11m

If the velocity of the body decreases non-uniformly then the slope of the velocity-time graph will have

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different values

same values

zero valves

constant valves

The intensity at a point due to a charge is inversely proportional to

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Amount of charge

Size of the charge

Distance between charge and the point

Square of the distance from the charge

None of these

Michael Faraday and Joseph Henry belong respectively to

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USA and England

England and France

England and USA

USA and France

None of these

Which of the following is most suitable as the core of transformer

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Soft iron

Alinco

Steel

None of these

In compressional wave,the layer of medium having reduced pressure is called:

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Compression

Elasticity

Node

Rarefaction

The field in which the work done be independent of the path followed is called

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Conservative fields

Non-conservative field

Varying intensity field

None of these

One watt-hour is equivalent to

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3.6 x 10³ joule

3.6 x 10^-3 joule

6.3 x 10³ joule

6.3 x 10^-3 joule

The dimensions of intensity of energy are

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MLT⁺²⁷T¹

MLT²T²

ML³

MLT^-2T³

If a force of 20 N makes an angle of 60° with the y-axis,then its vertical component will be

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5 N

17.32 N

10 N

8.66 N

The relation Cp > Cv by an amount equal to

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Gas constant

Universal gas constant

Both

None of these

The torque is taken as positive when it is

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Clockwise

Anticlockwise

Both

None of these

The frame of reference in which Newton's first law of motion holds is known as

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non-inertial frame is known as

inertial frame of reference

both of them

neither of them

If unit of length mass and time each be doubled the unit of work done is increased by

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4 times

6 times

8 times

2 times

During adiabatic expansion change of 2 moles of gas the internal energy is 100 j, the work done this expansion is

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Zero

-100 J

200 J

100 J

The property of bending of light around the obstacle is known is

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Interference

Polarization

Diffraction

None of these

Electric intensity inside a hollow sphere is

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Minimum

Maximum

q / c_o

Zero

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