Question # 1

The vertical and horizontal range will be equal id angle of projection is

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76°

45°

60°

120°

If a liquid is heated in weightlessness, the heat is transmitted through

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Conduction

Convection

Radiation

Neither, because the liquid cannot be heated in weightlessness

The square of 0.4 is:

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Greater than 0.4

Smaller than 0.4

Equal to 0.4

None of them

A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:

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49 rad/sec²

1 rad/sec²

0.16 rev/sec²

Both A and C

Both B and C

Any superconductor with critical temperature above 77 K, is referred as

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low temperature superconductor

high temperature superconductor

very low temperature superconductor

none of them

An alpha particle has a charge of

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+2e

-2e

-e

+3e

The least distance of distinct vision is:

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10 cm

25 cm

50 cm

100 cm

When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be

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P.E=Kx²_o

P.E= 1/2kx_o

P.E=1/2Kx²_o

P.E=Kx²_o

Static electricity is produced by the transfer of:

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Electrons

Protons

One fluid

Two fluids

None of these

Referring to the above figure, we can say that of all the elements, the most stable element is

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Phosphours

Iron

uranium

Lithium

Bismuth

The sum of positive and negative peak values are usually written as

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P-P value

negative

zero

may be positive or negative

Negative of vector can be made when

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Magnitude is made negative

Directions is reverse with negative magnitude

Only direction is changed

None of these

If the tensile force is suddenly removed from a wire then its temperature will

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Decrease

Increase

Becomes zero

Remain constant

The engine of a car produces acceleration of 4 m/s²in the car.If this car pulls another car same mass,what will be the acceleration produces in m/s²

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2

8

4

12

One micron is equivalent to

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10^-4m

10^-6m

10⁴m

10⁶m

In a photocell, sodium and potassium emit electrons for:

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Visible light

Infrared light

Ultraviolet light

All of these

A typical diffraction grating has lines per centimeter

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10 to 100

100 to 1000

1000 to 5000

400 to 5000

In the phenomenon of interference, the bright and dark fringes are of

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Different width

Equal width

Dark fringes are thicker than bright

Nona of these

If a unit charge experiences a force of 100N at a point electric field then intensity will be

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100 N/C

16 x 10^-19 N/C

10 N/C

10 x 10^-19 N/C

Such type of fibre in which center core is of high refractive index and the layer over the central core is low refractive index is called

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Step index fibre

Multi mode step index fibres

Multimode graded index fibre

None of these

Three coplanar forces acting on a body keep it in equilibrium. They should, therefore be

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Parallel

Non-parallel

Concurrent

Non concurrent

How many types of charges are ?

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One type

Two types

Three types

None of these

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