Question # 1

The body passing a viscous medium affected by:

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One force only

Two forces only

Four forces

None of these

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

Vibrator, chord

SHM, diameter

SHM, circumference

An electronic computer is basically a vast arrangement of electronic switches which are made from

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Resistors

Transistors

N -type crystals

P-Type crystals

Capacitors

The bonding between the semi-conductor materials is

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covalent

ionic

either of them

none of them

When weight of an object falling freely becomes equal to the drag force, then the body will move with

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increasing speed

decreasing speed

constant speed

none of them

When a mass 'm' is pulled slowly through a distance 'x_o' , the elastic potential energy of the spring would be

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P.E=Kx²_o

P.E= 1/2kx_o

P.E=1/2Kx²_o

P.E=Kx²_o

The magnetic field inside a solenoid can be increased by:

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Increasing n

Decreasing I

Increasing I

By using iron core within solenoid

All correct except (B)

From sand, we get a material used for construction of computer chips. That material is called:

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Germanium

Silicon

Copper

Lead

Two bodies of masses 1 kg and 5 kg are dropped gently form the top of a tower. A a point 20 cm from the ground both the bodies will have the same

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Momentum

Kinetic energy

Velocity

Total energy

Momentum is a parameter associated with

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wave motion

particle motion

neither wave nor particle motion

none of these

Shock absorber of the car is an example of

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resonance

forced oscillations

interference

damped oscillations

The right hand rule is applied to find

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The direction of a vector obtained by the vector product of two vectors

The magnitude of the vector obtained in the above manner

Neither the direction nor the magnitude

None of these

Which of the following strain are possible in solids

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Linear

Volumetric

Shear

All of these

The danger signals are red while the eye is more sensitive to yellow because

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Scattering in yellow colour is less than that of red

Red light is longer in wavelength than yellow light

Scattering in red is less than that of in yellow

Red colour has greater frequency than yellow light

The size of the domains in such that they can contain

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10²to 10⁴atoms

10⁴to 10⁸atoms

10⁸to 10¹²atoms

10¹²to 10¹⁶atoms

The mass of Uranium atom is

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10^-10 Kg

10^-15 Kg

10^-20 Kg

10^-25 Kg

For a rocket the change in momentum per second of the ejecting gases is equal to

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Acceleration of rocket

Velocity of rocket

Force acting on rocket

Momentum of rocket

When the magnitude of the drag force becomes equal to the weight then net force acting on the the droplet is

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Zero

Maximum

Remains the same

None of these

The ratio of SI units to CGS units of gravitational constant G will be

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10^-3

10

10²

10³

The precision of measurement in physics depends

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Average values

Least count of instrument

Error free instrument

b and c

When passes from medium to another, deviate from its path is called

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reflection

refraction

diffraction

transmission

Shear modulus for brass is

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36

39

51

65

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