Question # 1

According to Rutherford atomic model, the positive charge in an atom

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is concentrated at its centre

is in the form of positive electron at same distance from its centre

is spread uniformly through its volume

none of these

The photoelectric effect, the maximum energy of photoelectrons depends on the

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particular metal surface

frequency of incident light

both of them

none of them

The molecules or ions in a crystalline solids are

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static

not static

randomly moving

all of them

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

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n/AL

Al/n

nAL

nA/L

Current, voltage, resistance measuring circuit is connected with the galvanometer with the help of switch, known as

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ON switch

off switch

function switch

none of these

On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed

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adiabatically

isothermally

isochorcally

isobarically

The half life of uranium-238 is

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6.2 x 10⁹years

4.5 x 10⁹days

4.5 x 10⁹years

1.3 x 10⁶years

Which one is related to angular motion:

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Moment of a force

Moment of inertia

Moment of momentum

None of these

Strictly speaking, the earth is:

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An accelerated frame of reference

A non-inertial frame of reference

An inertial frame of reference

^{A non-accelerated frame of reference}

Both (A) and (B)

Huygen's principles states that:

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Light travels in straigth line

Light has dual nature

Either of these

None of these

Tick the one which is not a crystalline solid:

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Zirconia

Glass

Copper

Ceramic solid

An ionic compound

At the point of contact of the lens and the glass plate, the Newton's ring is

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dark

bright

either of them

neither of them

If the K.E.of a body becomes four times of the initial value.then new momentum will

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Become twice its initial value

Become three times.its initial value

Become four times.its initial value

Remains constant

At the present time, the main frontiers of fundamental science are

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2

3

4

5

If a transverse wave has a speed of 10 m/ sec and frequency of 10 cycle/ sec itswavelength is:

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1 m

10^-2 cm

10 m

10 cm

The dimensional formula of gravitational constant G is:

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MLT^-2

ML³T^-2

M^-1L³T^-2

M^-1LT^-2

Study of fluid properties in motion is

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Dynamics

Fluid statics

Fluid dynamics

None

If the magnification M₁ = 20.0 for objective and M₂ = 12.0 then total magnification is

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200

240

260

280

While applying Guass's Law assuming that the field is

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In different directions

Constant in direction

In all directions

None of these

The typical speed of Earth around the sun is

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29700 ms^-1

29600 ms^-1

29500 ms^-1

29400 ms^-1

Acceleration means the speed of the body is

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Increasing

Decreasing

Just stop

None of these

Two equal forces (P each) act at a point inclined to each other at an angle of 120°.The magnitude of their resultant is

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P/2

P/4

P

2P

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