Question # 1

Branch of physics which deals with the study of stars and galaxies is called:

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Solid state physics

Astrophysics

Molecular physics

Chemical physics

If electric and gravitational force on an electron in a uniform electric field will be

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E=mg/q

E=q/mg

E=,g/q

E=qg/m

The length of rotating vector (on a certain scale) represents the:

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Peak value of alternating quantity

RMS value of alternating quantity

Instantaneous value of alternating quantity

Either (B) or (C)

Either (A) or (B)

The circuit which is used to smooth the output voltage of the full-wave rectification is known as

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transformer

rectifier

filter

none of these

When certain nucleus emits anα particle, its mass number:

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Increases by one

Decreases by one

Remain same

Decreases by four

None of these

The word amorphous means:

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Without any structure

With definite structure

Regular arrangement of molecules

Both (B) and (C)

None of these

If the distance between two charges is doubled, the force between them will become

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Double

Half

Three times

One fourth

One third

Work is a Quantity

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Vector

Scalar

Non-physical

None of these

Two forces each of the magnitude F act perpendicular to each other. The angle made by the resultant force with the horizontal will be:

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30°

45°

60°

90°

A device used to measure the speed of liquid flow is known as

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barometer

speedometer

sphygmomanometer

venture-meter

Resistance of a conductor depends upon

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the quantity of current passing through it

the voltage applied between its end

its dimensions, physical state and nature of its material

all of the above

For the angle of projection of a projectile for which its maximum height and horizontal range are equal

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50°

45°

60°

76°

The first law of thermodynamics defined as

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Conversion of heat energy into mechanical energy

Conversion of heat energy into vibrational energy

Conversion of heat energy into translational energy

All of these

For average velocity of a body, it has

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Straight path

Curved path

Steady motion or variable

All of them

To get high resolving power for a telescope one should use

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Objective of large aperture

Objective of large focal length

Eye piece of large focal length

Eye piece of small focal length

Bulk modulus for ice is

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5

6

7

8

Which of the following light move faster in water

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Red

Violet

Green

Blue

Which of the fluid has ideal behaviour at low speeds

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Air

Blood

Honey

None of these

Fluid friction of a spherical body depend on the

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Shape

Size

Orientation

All of these

Pressure may be defined as_____per second per unit area:

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Change in force

Change in momentum

Change in energy

Work done

A ball whose kinetic energy E, is thrown at an angle of 45° with horizontal,its kinetic energy at highest point of flight is

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E

E / √2

E/2

Zero

The dimension of gravitational constant G are

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[ML²T^-2]

[M^-1L³T^-2]

[M^-1L²T^-1]

[M^-1L^-2T^-2]

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