Question # 1

Aerodynamics is a branch of

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Hydrodynamics

Thermodynamics

Both of them

Statics

The restoring force is always directed towards:

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Rest position

Equilibrium position

Mean position

All of them

Two vectors having different magnitudes:

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Have their directions opposite

May have their resultant zero

Cannot have their resultant zero

None of these

Find the total displacement of a body in 8 seconds starting from rest with an acceleration of 20 cm/s²

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0.064 m

640 cm

64 cm

64 m

The electric field, magnetic field and the direction of their propagation are mutually

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perpendicular

parallel

none of these

The natural arrangement of colours in the spectrum of white light spectrum is

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VIBGYOR

ROYBGIV

ROYBIGV

BIGROYV

None of these

Structure of the nucleus was explained by

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J.J Thomson

Bohr

Millikan

Rutherford

The value of viscosity of a fluid is dependent on (at constant temperature)

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the fluid itself

the fluid and its container

anything in contact with the fluid

all of the above

Monochromatic light means waves of:

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Same frequency

Same colour

Same wavelength

All of them

Velocity of particle executing SHM will be maximum at

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Extreme position

Mean position

b/w mean and extreme

None

When two spherical conducting balls at different potentials are joined by a metallic wire, after some time:

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Both the conductors are at the same potential

Potential difference across the conductors remain constant

Potential difference across the conductors becomes zero

Both (A) and (B)

Both (A) and (C)

Certain charge +q is placed at the center of a sphere. At each of the sphere,The directions of electric intensity and vector area are:

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Same

Different

Opposite to each other

At 60º with each other

Both (B) and (C)

A particle is moving along a circular path with uniform speed. Its projection will execute ___along the _____ of the circle:

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Circular motion, circumference

Vibratory, chord

SHM, diameter

SHM, circumference

The sum of positive and negative peak values is called:

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Instantaneous value

Peak value

Rms valuie

Peak-to peak-value

None of these

Radiation detector are used to

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measure intensity of radiation

measure energy of radiation

difference between different types of radiation

all the above

A grating with high resolving power can distinguish _______ difference in wavelengths :

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Smaller

Larger

Zero

None of these

Ball pen functions on the principle of

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Viscosity

Boyle's law

Gravitational force

Surface tnesion

Two dissimilar metals joined at their ends kept at constant temperature constitute:

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Cell

Voltmeter

Thermocouple

Potentiometer

None of these

If d is the displacement of the body in time t, then its average velocity will be

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V_av= d x t

V_{av = t/d}

V_{av = d/t}

Acceleration of a body at any particular instant during its motion is known as

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average acceleration

uniform acceleration

instantaneous acceleration

all of them

The ratio of the gravitational force F_gto the electrostatic force F_ebetween two electrons at the same distance apart is approximately

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9.8

24 x 10¹⁹

24 x 10⁴²

24 x 10^-44

The motional e.m.f depends upon the

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Length of a conductor

Strength of a magnet

Speed of the conductor

All of the above

The direction of the streamlines is the same as the direction of the

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force

torque

velocity

weight

All trigonometric functions (since, cosine tangent etc. ) are positive in:

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1st Quadrant

2nd Quadrant

3rd Quadrant

4th Quadrant

A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of

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3 s

5 s

7 s

9 s

Physics details with the study of:

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Matter

Energy

Both of them

Human body

Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:

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Peak value

RMS value

Instantaneous value

Peak-to-peak value

Both (A) and (C0

Physics deals with the study of

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Matter

Energy

Both of them

Human Body

The liquid which conduct current is known as

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heating effect

chemical energy

electrolyte

ohm's law

The number of isotopes of hydrogen are

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2

1

3

4

The materials in which there are plenty of free electrons for electrical conduction are known as

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conductors

insulators

semi-conductors

all of them

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