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NEET Physics Statement Based Questions

1.A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system :-

decreases by a factor of 2

remains the same

increases by a factor of 2

increases by a factor of 4

Correct! Wrong!

Two astronauts are floating in gravitational free space after having lost contact with their spaceship. The two will:-

Move towards each other

Move away from each other

Will become stationary

Keep floating at the same distance between them

Correct! Wrong!

A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involves :-

Potential gradients

A condition of no current flow through the galvanometer

A combination of cells, galvanometer and resistances

Cells

Correct! Wrong!

Which of the following statements are correct? a) Centre of mass of a body always coincides with the centre of gravity of the body b) Centre of mass of a body is the point at which the total gravitational torque on the body is zero c) A couple on a body produce both translational and rotation motion in a body d) Mechanical advantage greater than one means that small effort can be used to lift a large load

(a) and (b)

(b) and (c)

(b) and (d)

Correct! Wrong!

If the focal length of objective lens is increased then magnefying power of:

microscope will increase but that of telescope decrease

microscope and telescope both will increase

microscope and telescope both will decrease

microscope will decrease but that of telescope increase

Correct! Wrong!

A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced e.m.f. is

twice per revolution

four times per revolution

six times per revolution

once per revolution

Correct! Wrong!

In a n-type semiconductor, which of the following statement is true?

Electrons are minority carriers and pentavalent atoms are dopants

Holes are minority carriers and pentavalent atoms are dopants

Holes are majority carriers and trivalent atoms are dopants

Electrons are majority carriers and trivalent atoms are dopants

Correct! Wrong!

If we study the vibration of a pipe open at both ends, then which of the following statements is not true?

Odd harmonics of the fundamental frequency will be generated

All harmonics of the fundamental frequency will be generated

Pressure change will be maximum at both ends

Antinode will be at open end

Correct! Wrong!

A current loop in a magnetic field

can be in equilibrium in one orientation

can be in equilibrium in two orientations, both the equilibrium states are unstable

can be in equilibrium in two orientations, one stable while the other is unstable

experiences a torque whether the field is uniform or non-uniform in all orientations

Correct! Wrong!

10.The condition under which a microwave oven heats up a food item containing water molecules most efficiently is

the frequency of the microwaves has no relation with natural frequency of water molecules

microwaves are heat waves, so always produce heating

infra-red waves produce heating in a microwave oven

the frequency of the microwaves must match the resonant frequency of the water molecules

Correct! Wrong!

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NEET Physics Statement Based Questions

NEET Physics Statement Based Questions

1.A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system :-

Two astronauts are floating in gravitational free space after having lost contact with their spaceship. The two will:-

A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involves :-

If the focal length of objective lens is increased then magnefying power of:

A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced e.m.f. is

In a n-type semiconductor, which of the following statement is true?

If we study the vibration of a pipe open at both ends, then which of the following statements is not true?

A current loop in a magnetic field

10.The condition under which a microwave oven heats up a food item containing water molecules most efficiently is

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