Question # 1

When a constant potential difference is applied across the conductor, the drift velocity of electrons:

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Increases

Decreases

Remains the constant

Either of these

None of these

Those quantities which can be measured accurately are known as

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Physical Quantities

Scalar Quantities

Vector Quantities

Non Physical Quantities

When quarter of a circle is completed, phase of vibration is:

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90°

180°

45°

360°

The cause of mirage observed in deserts in bright sunlight is due to

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Refraction of light

Reflection of light

Scattering of light

Total internal reflection of light

A digital system deals with quantities which has discrete values:

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Two in number

One in number

Three in number

Four in number

None of these

A line which represents the direction of travel of a wave is known as:

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Spherical Wavefront

Locus

Ray

Either B or C

In the force applied is parallel to the direction of motion, then work done is:

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Maximum

Minimum

Zero

None of these

Force is a:

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Scalar quantity

Base quantity

Derived quantity

None of these

Power is a :

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Vector quantity

Base quantity

Scalar quantity

None of these

The density of water is 10³kg/m³. The water pressure on a submarine is 2.0 x 10⁷N/m². The depth of the submarine below the surface of the water, in maters, is approximately

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200 m

11000 m

2000 m

8000 m

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

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Maximum

Minimum

Zero

Very small

None of these

The energy expended when a force of one newton moves an object one meter in the direction of force is called

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1 calorie

1 Joule

1 KWh

1 electron Volt

Geometrical optics cannot give following characteristics for a microscope

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Image position

Image size

Resolution of image

Any of the above

If a planet exists whose mass is twice that of the earth and whose radius is three times that of the earth, a1 kg mass on its surface would weight about

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1.1 N

2.2 N

4.4 N

None of these

In Micheal sons interfrometes apparatus the numbers of mirrors and glas plates are used respectively ara

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2,3

3,2

3,3

2,2

The rotational analogue of Newtons second law of motion is

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mr²α

mrα

mrα²

None of these

Fluids resist force this property is called

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Stiffness

Strength

Ductility

Elasticity

Wb/m² is equal to

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Henry

Watt

Tesla

Dynes

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

One angstrom equal:

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10^-8m

10^-9m

10^-10m

10^-11m

In the following velocity time graph,the distance traveled by the body in meters is

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200

250

300

400

The field of a long bar magnet is like a

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Two pole pieces of magnet

Solenoid

Toroid

None of these

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