Question # 1

The highest value reached by voltage or current in one cycle is called

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root means square value

peak value

peak to peak value

instantaneous value

The product of induced current and the resistance of the wire through which the current is passing is called:

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Electromagnetic induction

induced emf

Induced current

Self induced

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

Which of the following pairs does not have identical dimensions?

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Torque and energy

Energy and work

Momentum and impulse

Mass and moment of inertia

The product of force and time is called change in:

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Momentum

Impulse

Force

Both a and b

If two forces of magnitudes 3.5 and 2.5 N act on a body such that the angle between the forces is zero, then magnitude of the resultant will be:

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1.0 N

6 N

3.5 N

12 N

Centripetal force performs:

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Maximum work

Negative work

Positive work

None of these

Melting point of ice

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Increases with increasing pressure

Decreases with increasing pressure

Is independent of pressure

Is proportional to pressure

The SI unit of magnetic induction is

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Weber

Weber/meter

Henry

Tesla

Work done is independent of path followed in _______

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Gravitational field

Magnetic field

Electric field

All of these

A semi-conductor in its extremely pure form is known as

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extrinsic semi-conductor

intrinsic semi-conductor

either of them

none of them

The cause of power loss in optic fibre is

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Absorption

Scattering

Dispersion

All

If a glass slab is placed in the path of a converging beam of light The point of convergence of light

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Moves away from the glass slab

Moves towards the glass slab

Remains at the same point

Moves straight

For which position will be maximum blood pressure in a body have the smallest value

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Standing upright

Sitting relaxed

Lying horizontally

Standing on one's head

The value of g at the center of earth is:

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Double

Zero

10 time larger than earth

Infinite

Energy can be obtained form solid waste by

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Direct combustion

Indirect combustion

Permentation

None of these

Inkjet printer can produce

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Black and white copy

Coloured copy

Both

None of these

The Earth rocks are in molten and partly molten state, usually within the Earth surface of

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5 km

10 km

15 km

18 km

A mental wire is stretched by suspending weight to if x is the longitudinal strain and y is young s modulus of elasticity then the elastic potential energy per unit volume is

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1/2 y x²

x² / 2y

y² / 2x

x² / 2y

Energy stored in a capacitor is

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E = 1/2 C²V²

E = 1/2 C^-1V²

E = 1/2 CV²

E = C²V²

Approximate power of Jumbo. Let Aircraft in watts.

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1.2 × 10⁶

1.3 × 10⁸

1.2 × 10⁸

1.1 × 10⁹

The refracting edge of the prism must be parallel to the axis of rotation of the telescope, so that the turn table is leveled using

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Screws of the spectrometer

Leveling screws

Turn table screw

None of these

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