Question # 1

The charge carries in the electrolyte are:

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Positive ions

Negative ions

Either (A) or (B)

Both (A) and (B)

Neither (A) nor (B)

Substances that flow easily have

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large coefficient of viscosity

small coefficient of viscosity

either of them

none of them

γ-rays behave like a particle because they explain the

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Compton effect

Photoelectric effect

Pair-production

all the above

When the charged particle is projected at right angles to the field, then experienced by it will be:

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Maximum

Zero

qvB

Both (A) and (B)

Both (A) and (C)

The consumption of energy by a 1000 watt heter in half an hour is:

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5 Kwh

0.5 Kwh

2.5 Kwh

3.2 Kwh

The chemical behaviour of an atom is determined by

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binding energy

atomic number

mass number

number of isotopes

In case of metallic conductors, the charge carriers are

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Protons

Electrons

Antiprotons

Positrons

Both A and B

The work done moving a body between two points in a conservation field is independent of the:

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Direction

Force applied

Path followed by the body `

Power

At the temperature, a body emits radiation which is principally

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of long wavelengths in the visible region

of long wavelengths in the invisible infrared region

of short wavelength in invisible ultraviolet region

none of these

Solar cell converts sunlight directly into

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potential energy

thermal energy

mechanical energy

electrical energy

A person starts his journey from a point 0, travels 4 Km SW, then 4 Km NW, and finally 4 Km north-east. At what distance is he now from point 0?

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0 Km

4 Km

8 Km

12 Km

The final image obtained by astronomical telescope is

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Inverted w.r.t object

Magnified

Virtual

All of them

After elastic limit the shape of graph is

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Curved

Straight Line

Saw tooth

Arbitrary

Acceleration of a body is positive, if the velocity of the body is

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constant

increasing

decreasing

none of them

Crystalline solids are also

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Metals

Ionic compound

Ceramics

All of them

The value of coefficient of viscosity in comparison to coefficient of friction is

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Very large

Very small

Nearly same

May be small or large

If light of low wavelength is used in Young's double slit experiment then width of the fine will

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Decreases

Increase

Not fixed

No change

The Dimension of acceleration is

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[L²T]

[LT²]

[LT^-2]

None of these

The work done in moving a positive charge of two coulombs from one point to another point when the potential difference between them is 5 volt.

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5 Joules

10 Joules

15 Joules

20 Joules

A body in equilibrium implies that it is no moving nor rotating

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True

False

Sometimes in equilibrium

None of these

The terminal velocity of falling object will be proportional to

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r²

1/r²

r

1/r

The age of universe is

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5 x 10¹⁷ sec

1.4 x 10¹⁷ sec

3.2 x 10⁷ sec

8.6 x 10⁴ sec

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