Question # 1

One radian is equal to:

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30.3°

45.3°

50.3°

57.3°

The branch of physics which is mainly concerned with the motion of bodies under the action of forces is called:

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Optics

Mechanics

Thermodynamics

Astro physics

Two conductors having the same type of charges are connected by a conducting wire. There would not be any amount of charges on them if

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They have the same potential

They have the same amount of charge

They have the same capacity

They have the same shape

An electron is accelerated through a potential difference of 50v. its de-Brogile wavelength is

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1.66 x 10^-29m

1.74 x 10^-10cm

17.4 x 10^-6m

1.74 x 10^-10m

In equation F=ma, then mass 'm' is

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rest mass

variable mass

inertial mass

gravitational mass

The SI unit of conductivity is

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ohm-m

ohm^-1m^-1

ohm-m^-1

ohm^-1m

The speed of a pendulum is measured to be 3.0 s in the inertial reference frame of the pendulum. What is its period measured by an observer moving at a speed of 0.95 c with respect to the pendulum

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2.9 s

3.0 s

6.6 s

9.6 s

In case of a parallel plate capacitor if the plate separation is doubled and plate area is halved, the capacitance becomes

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Four-fold

One-half

One-fourth

Zero

Mass of proton is

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1.67 x 10^-27kg

1.67 x 10^-31kg

1.66 x 10^-34kg

1.67 x 10^-17kg

Ohm established a relation between

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voltage and resistance

voltage and charge

voltage and current

voltage resistance and charge

The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to

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300°C

573°C

600°C

743°C

Linear momentum is a vector quantity and has direction of

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Its displacement

Velocity

Acceleration

None of these

Stress is defined in terms of:

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Applied force

Deformation

Formation

Any of these

None of these

The concept of entropy was introduced in the thermodynamics by

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kelvin

Clausius

Carnot

None of these

Acceleration means the speed of the body is

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Increasing

Decreasing

Just stop

None of these

Glare produces when light reflects from water snow and rough road surfaces when their angle of incidence is

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Small

Large

Very large

None of these

Layer of oil on water in sunlight appears coloured due to

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diffraction of light

dispersion

interference of light

polarization of light

Rectangular components of a vector are those which have angle between them

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30^o

60^o

90^o

0^o

Recent studies of ferromagnetism have shown that there exists in ferromagnetic substances small regions called

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tiny regions

domains

vectors

none of them

The process of doping causes resistivity of semiconductor to

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Increase

Decrease

Same

Become zero

In an interference fringes pattern the fringes are

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Equally spaced

Wider near the centre and narrower away from it

Narrower near the centre and wider away from it

None of these

Angular momentum has the same unit as

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Impulse x distance

Linear momentum x time

Work x frequency

Power x time

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