Question # 1

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 direction of the acceleration is the same as that of

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speed

velocity

both of them

none of them

The input resistance of the OP-AMP is the resistance between the

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(-) input and output

(+) input and output

(-) and (+) inputs

between any inputs

β-particles are easily deflected by collisions than heavy

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α-particles

β-particles

γ-particles

none of these

If electric and gravitational force on an electron in a uniform electric field will be

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E=mg/q

E=q/mg

E=,g/q

E=qg/m

The concept of direction is purely:

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Absolute

Relative

Relative to stars always

Relative to the sun always

None of these

A physical system under going forced vibrations is known as

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Simple harmonic oscillator

Compound harmonic oscillator

Physical harmonic oscillator

driven harmonic oscillator

The irregular and unsteady flow of the fluid is called

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turbulent flow

steady flow

either of them

both of them

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

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Sensitive

Accurate

Stable

None of these

Tick the one which is not polymer solid:

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Zirconia

Polythene

Nylon

Synthetic rubber

None of these

The ratio of the size of the image to that of object is called:

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Focal length

Aperture

Linear magnification

Principal axis

An airplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m.When it is vertically above a point A on the ground a bomb is released from it.The bomb strikes the ground at point B.The distance AB is

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1200 m

0.33 km

3.33 km

33 km

Which of the following is a scalar quantity

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Density

Displacement

Torque

Weight

In Huygen's wave theory the locus of all points in the same state of vibration is called

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A half-period zone

Vibrator

Wave front

A ray

The equation of continuity of fluid is based on the

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Law of conservation of energy

Law of conservation of mass

Law of conservation of momentum

All of these

When a light signal travels along the length of the optical fibre, the power lost by it is due to

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Reflection

Refraction

Seattering and absorption

Diffraction

Polythene,polystyrene and nylon are example of

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Polymeric solids

Crystalline solids

Glassy solids

Stoke's Law holds for bodies having

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Elliptical shape

Spherical shape

Curved shape

None

A body will be in rotational equilibrium if

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The relation Cp > Cv by an amount equal to

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Gas constant

Universal gas constant

Both

None of these

The displacement coincides with the path of motion when a body moves along a

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Straight line

Curved path

Zig Zag path

None of these

Two bodies of mass 1 kg and 2kg have equal momentum.Then the ratio of their kinetic energies is

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2 : 1

3 : 1

1 : 3

1 : 1

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