Question # 1

If a car rest acceleration uniformly to a speed of 144 km/h in 20 s it covers a distance of

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20 m

400 m

1440 m

2880 m

When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:

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F_D-mg

Zero

mg-F_D

None of these

Nucleus consists of

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proton and neutron

protons and electron

electron and neutron

protons only

The resonance will be sharp, if the amplitude decreases rapidly at a frequency

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equal to the resonant frequency

slight different from the resonant frequency

greatly different from the resonant frequency

any one of them

The concept of electric field theory was introduced by

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Michael Faraday

Newton

Dalton

Kepler

Einstein

For making cooking utensils, which of the following pairs of properties is most suited?

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Low specific heat and high conductivity

Low specific heat and low conductivity

High specific heat and high conductivity

High specific heat and low conductivity

Examples of polymeric substances are:

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Plastic

Synthetic rubbers

Zirconia

All of these

Both (A) and (B)

When the total displacement is divided by total time taken, we get:

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Velocity

Average speed

Average velocity

None of these

Real gases strictly obey gas law at:

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High pressure and low temperatures

Low pressures and high temperatures

High pressures and high temperatures

None of these

The ability of the body to return to its original shape is called

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deformation

stretching

compressing

elasticity

Electric field strength is defined as

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Work done on unit charge

Force exerted on unit charge

Distance covered by unit charge

Power exerted by unit charge

None of these

Wavelength of X-rays falling at glace angle 30° on crystal with atomic spacing 2 x 10^-9m for the first order diffraction is

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4 x 10^-6m

2 x 10^-10m

0.2 x 10^-10m

20 x 10^-10m

The uncertainty of any measurement may occur due to

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Limitation to an instrument

Natural vibrations of the object

Natural imperfections of a persons sense

All of these

All possible process/processes to get plane polarized light

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Reflection from different surfaces

Refraction through crystals

Scattering by small particles

All of these

When an electric field is strong the lines are

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Farther

Closer

Parallel

All of them

Conventionally, all the distances p, q, f, are measured from ______ of the lens

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Focus

Optical center

Edges

Centre of curvature

For glass-air boundary, the value of the critical angle is

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42°

45°

30°

60°

The materials in which valence electrons are bound very tightly to their atoms and are not free, are known as

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conductors

insulators

semi-conductors

all of them

A line whose tangent at each point is in the direction of an electric intensity at that point is called

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Charge

Voltage

Electric force

None of these

A 500 kg car takes a round turn of radius 0 m with a velocity of 36 km/h.The centripetal force is

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250 N

750 N

1000 N

1200 n

A monkey sits on the pan of spring scale kept in an elevator.The reading of the spring scale will be maximum when

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Elevator is stationary

Elevator cable break and it falls freely towards earth

Elevator accelerates downwards

Elevator accelerates upwards

Dolphins have bodies to assist their movement in water are

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Irregular bodies

Closer to streamline body

Stream lined bodies

None of these

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