Question # 1

Newton published laws of motion in his famous book "principia" in

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1867

1667

1676

1687

Above a certain velocity of a fluid is called

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turbulent flow

steady flow

either of them

both of them

When the emitter-base junction of a transistor is reverse biased, collector current

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Reverses

Increases

Decreases

Stops

When a mass 'm' is pulled slowly, the spring stretches by an amount x_o, then the work done will be

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W=Kx_o

W=1/2Kx_o

W=1/2Kx²_o

W=4Kx_o

The fourth band is a:

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Silver band

Red band

Gold band

Either A or C

Either A or B

An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is

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-20°C

6.67°C

5°C

0°C

When a high energy photon interact with a metal, which of the following effect is most likely to be taken place

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pair production

photoelectric effect

Compton effect

None of these

The mechanics, which deals with the objects moving with velocities approaching that of light is called

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Relativistic mechanics

Wave mechanics

Quantum mechanics

Statics

Velocity of particle executing SHM will be maximum at

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Extreme position

Mean position

b/w mean and extreme

None

Force is a:

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Scalar quantity

Base quantity

Derived quantity

None of these

Machine parts are jammed due to:

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Increasing in viscosity of lubricant

Decreasing in viscosity of lubricant

Decreasing in surface tension of lubricant

None of these

The value of shear modulus is zero for:

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Water

Mercury

Diamond

Both (A) and (B)

Both (A) and (C)

The bands below the valence band are

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completely filled and play active part in conduction process

completely filled and plays no part in conduction process

not completely filled and play active part in conduction process

not completely filled and play no part in conduction process

Bulk modulus for copper is

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50

75

140

147

The shaft of a motor is rotating at constant angular velocity of 3000 rpm. The angle turned per second is

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100 π rad/s

200 π rad/s

300 π rad/s

400 π rad/s

Crystalline solids have the properties such as

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Regular arrangement

Covalent bonding

Some what defective

All of them

Shear modulus for bone is

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15

40

50

80

Most widely used optical fibres are those which propagate light by

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total interval reflection

continuous refraction

both of them

none of them

When the second condition of equilibrium is satisfied, the body has

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no linear acceleration

no angular acceleration

F_x= 0

none of them

The nonrenewable energy source is

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Sunlight

Hydroelectric

Uranium

None of these

The speed of sound in air is

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320 ms^-1

323 ms^-1

330 ms^-1

333 ms^-1

The symbol that is used to represent rotational inertia or moment of inertia is

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W

I

R

M

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