Question # 1

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

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maximum speed

zero speed

maximum speed

none of them

Battery is charged in motor cars, which is based on

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Chemical effect

Magnetic effect

Electric effect

None

When a body is moves along a circular path with constant speed, it has an acceleration, which is always directed:

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Along the tangent

Toward the centre

Away from the centre

None of them

The ability of the body to return to its original shape is called

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deformation

stretching

compressing

elasticity

In an ideal gas, the molecules have:

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Kinetic energy only

Potential energy only

Both KE and PE

None of these

Fluids resist force, This property is called

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Stiffness

Strength

Ductility

Elasticity

The unit of decay constant is:

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Second

Metre

Hour

Year

Second^-1

The cohesive forces between atoms, molecules or ions in crystalline solids maintain the strict

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short range order

long range order

both of them

none of them

The decrease in velocity per unit time is called:

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Variable Acceleration

Average Acceleration

Retardation

None of these

The unit of resistance is

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volt

ampere

ohm

coat

A bar 1.0 m in length and located along x-axix moves with a speed of 0.75 c with respect to a stationary observer. The length of the bar as measured by the stationary observer is

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1.66 m

1.0 m

0.66 m

2.66 m

In the phenomenon of hysteresis, the magnetism and magnetizing current behaves as

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I lags

1 leads B

I & B becomes equal

None of these

When the vectors are mutually perpendicular then the product is

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Maximum

Minimum

Zero

None of these

The unit of gain (G) for non-inverting amplifier is

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Ampere

ohm

Volt

None of these

If yellow light emitted by sodium lamp in Young's double slit experiment is replaced by blue light of the same intensity:

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Fringe width will decrease

Fringe width will increase

Fringe width will remain unchanged

Fringe will become less intense

A charge is 90C passes through a wire in 1 hour and 15 minutes. Wat is the current in the wire?

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10mA

20mA

15mA

25mA

Ball pen functions on the principle of

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Viscosity

Boyle's law

Gravitational force

Surface tension

For a gas obeying Boyle's law, if the pressure is doubled the volume becomes:

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One half

Double

Four times

None of these

In Toricelli's theorem, the speed of efflux is equal to

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h₁ - h₂

Action of gravity

(h₁ - h₂) and falling under gravity

None of these

Linear momentum is a vector quantity and has direction of

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Its displacement

Velocity

Acceleration

None of these

Albert A. Michelson devised interferometer is

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1820

1845

1860

1881

A uniform beam of weight 100 N is 4 m long and is supported 1.0 m from one end. A load of weight wN hangs from that ened and the beam is in equilibrium.What is the value of w?

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50 N

75 N

100 N

200 N

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