Question # 1

To designate the voltage as low or 0 by a logic gate, the specified minimum value is:

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0.2 volt

0.8 volt

0 volt

2.0 volt

5.0 volt

The induced current in the loop can be increased by:

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Using a stronger magnetic field

Moving the loop faster

Replacing the loop by a coil of many turns

All above

Both (A) and (B)

When the object lies between F and 2F, the image formed by is formed at:

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Real

Virtual

Diminished

Erect

Potentiometer is more sensitive than voltmeter, because

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Voltmeter has a very high resistance

Voltmeter has a very low resistance

Potentiometer does not draw any current from a source of unknown potential difference

Potentiometer is sensitive

1 gm-cm^-3is equal to:

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10³kg-m^-3

10^-3kg-m^-3

1 kg-m^-3

10⁶kg-m^-1

In a transistor, if the central region is n-type, then this type of transistor is known as

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n-p-n transistor

p-n-p transistor

either of these

none of these

The waves which propagate through the oscillations of material particles are known as:

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Mechanical waves

Electromagnetic waves

Any of them

None of them

The velocity of sound in air not effected by changes in

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Moisture contents in air

Temperature of air

The atmosphere pressure

The composition of air

If the object and its image are located at a distance of 5 cm from the focus of a convex lens, the focus length of the lens will be:

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5 cm

10 cm

20 cm

25 cm

According to the special theory of relativity, a moving clock

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runs faster

runs slower

neither runs faster nor slower

all of these

An ordinary glass gradually softens into a 'paste -like' state before it becomes a very viscous liquid. It happens almost at:

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800^oC

500^oC

300^oC

100^oC

None of these

The entity which measures the quantity of motion in a body is called

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force

energy

momentum

power

The weight of 100 kg man in an elevator going up with an acceleration of 4ms^-2will be

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908 N

490 N

100 N

1380 N

Pascal is a unit of

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Mass

Power

Pressure

Intensity of light

If the mass and radius of a planet are doubled, then acceleration due to gravity on its surface will become

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One fourth

One half

Double

Four times

Huygen principle is used to determine:

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Speed of light

Location of wavefront

About polarized and unpolarized light

None of them

When interference of light takes place

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Energy is created in the region of maximum intensity

Energy is destroyed in region of maximum intensity

Conservation of energy hold goods and energy is redistributed

Conservation of energy does not hold good

One light year = ______.

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9.5 x 10^-15m

9.5 x 10¹⁵m

9.5 x 10^-12m

9.5 x 10¹²m

If radius of droplet is halved then its terminal velocity in viscous medium

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Doubles

Becomes halved

Becomes one fourth

Becomes four times

In case of reflection of ray within a denser medium, angle of incidnet is ______ -angle of reflection

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Greater then

Smaller then

Equal to

None of these

The characteristics of steady flow is

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Non-viscous

Incompressible

Streamline

All of these

If a body is at rest, then it is said to be in

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torque

equilibrium

dynamic equilibrium

static equilibrium

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