Question # 1

The decrease in velocity per unit time is called:

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Variable Acceleration

Average Acceleration

Retardation

None of these

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

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stethoscope

thermometer

manometer

barometer

The capacity of a parallel plat capacitor depends on the

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Type to metal used

Thickness of plates

Potential applied across the plates

Separation between the plates

Which quantity has the same dimension as that of impulse?

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KE

Power

Momentum

Work

Bernoulli's equation is based upon law of conversation of

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mass

momentum

Energy

None

A current of 1 ampere is passing through a conductor. The charge passing through it in half a minute s

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One coulomb

0.5 coulomb

30 coulombs

2 coulombs

None of these

The acceleration of body executing SHM is directly proportional to

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Applied force

Amplitude

Displacement

Frictional force

Neutron was disvovered by:

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Rutherford in 1920

Chadwick in 1922

Bohr in 1913

Compton in 1927

None of these

Which of the following types of force can do no work on the particle on which it acts

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Frictional force

Gravitational force

Electric force

Centripetal force

The waves produced in a microwave oven have wavelength.

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12 mm

12 cm

12 m

12 mm

With the propagation of a longitudinal wave through a material medium, the quantities transmitted in the propagation direction are

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Energy, momentum and mass

Energy

Energy and mass

Energy and linear momentum

A fiber of 50μm diameter capable of carrying white light at ______ distances is called ______ index fiber

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Large, multi-mode step

Small, multi-mode step

Small, multi-mode graded

Large, single mode step

In a photocell, certain metal emits electrons for :

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Visible light

Infrared light

Ultraviolet light

All of these

If we move from equator to pole,value of g

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Increases

Decreases

Remains same

First (A) and then (B)

Resistance of 60 watt bulbs in 120V line is:

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20 ohms

240 ohms

0.15 ohms

180 ohms

The units of modulus of elasticity are

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Nm^-2

Nm²

Torr

Both B and C

The motion of a charged nucleus also produces a magnetic field which is

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Weaker than orbital electrons

Stronger than orbital electrons

Equal than orbital electrons

None of these

Find the range of the projectile, having speed 30 ms^-1in a direction 30^o above the horizon

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50 m

80 m

90 m

100 m

Time of flight of a body in projectile is the time in which a body

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Remains in the air

It reaches maximum height

The velocity becomes zero

None of these

The torque acting upon a system is zero Which of the following will be conserved

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Linear momentum

Angular momentum

Moment of inertia

Angular velocity

The speed of light in a medium depends upon

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Its wavelength

Its frequency

Refractive index

All of these

The dimensions of co-efficient of viscosity are

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[ML^-1T^-1]

[ML^-2T^-1]

[ML²T^-3]

[ML³T^-1]

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