Question # 1

SI unit of pressure is pascal, which is equal to

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104 Nm-2

1 Nm-2

102 Nm-2

103 Nm-2

What is mass of body if W = 580 N ?

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5.8 Kg

0.58 kg

0.058 kg

58 kg

Thermal conductivities of Lead

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23

30

35

85

The Celsius lower reference point is 0^oC while upper reference point is:

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212 ^oC

180^oC

100^oC

110^oC

_____________ is an other unit of power.

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J

W

hp

W/J

The S.I unit of efficiency is :

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J/s

Nm

watt

It has no unit

All ________ conduct heat easily:

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Non metals

Gases

Material

Metals

If 1N is force and body is displaced to 1m than work is :

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2 J

1 J

3 J

4 J

Which instrument is most suitable to measure the internal diameter of a test tube.

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Metre rule

Vernier Callipers

Measuring tape

Screw gauge

The energy present in our food is:

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Mechanical energy

Gravitational potential energy

Chemical energy

Nuclear energy

If a force F makes an angle θ with the direction of motion of the force, then the formula for the work done will be:

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W = FS

W = FS cosθ

W = FS sinθ

W = FS tanθ

Time period is reciprocal of:

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Frequency

Cycle

Wavelength

Amplitude

The commercial unit of electrical energy is:

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Joule

Watt

Kilowatt hour

Electron volt

How Galvanometer is connected in circuit to detect current?

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In Series

In Parallel

Fixed

Variable

One micro coulomb charge is equal to:

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10^-3 C

10³C

10⁶C

10^-6C

A converging mirror with a radius of 20cm creates a real image 30 cm from the mirror. What is the object distance:

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5.0 cm

7.5 cm

15 cm

20 cm

An object of placed at he centre of curvature of a concave mirror. The image produced by the mirror is located:

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out beyond the centre of curvature.

at the centre of curvature

between the centre of curvature and the focal point

at the focal point

A group of instructions or a program which guides hardware to do work is called:

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Hardware

Micro processor

Memory

Software

Positive charge in an electric field always tend to move:

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Does not move

From lower to higher potential

From higher to lower potential

All of these

In the presence of a charged body, an insulated conductor develops positive charge at one end and negative charge at the other end, this i- called:

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Electrostatics

Electrostatic induction

Magnetism

Electromagnetic induction

AND gate can be formed by using two:

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NOT gates

OR gates

NOR gates

Nand gates

The amount of current that can be painful is:

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0.005A

0.001A

1A

2A

According to Hygen's principle, each point on a wave front acts as a source of.

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Secondary wavelet

New wave front

Sound

Primary wavelet

Centripetal force perform

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Maximum work

Minimum work

Negative work

No work

1 KWh =

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3.6 x 10³K

3.6 x 10⁶K

3.6 x 10⁹J

3.6 x 10¹²J

Head to tail rule is used for

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Addition of vectors

Subtraction of vectors

Multiplication of vectors

Division of vectors

Cloud formation in atmosphere is an example of.

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Isothermal process

Isochoric process

Adiabatic process

Isobaric process

when a ball is throng straight up, the acceleration at its highest point is.

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Upward

Down ward

Zero

Horizontal

In blue light is used as compare to red light then fringe spacing.

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Increase

Decreases

Remain same

Becomes zero

Bright fringes are also called as

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Minima

Maxima

Wave front

Ray of light

Hot igneous rocks, usually in molten or partly molten state are found in the depth of

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5 km

10 km

15 km

20 km

Which one of the following is into directed along the axis of rotation

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Angular acceleration

Angular momentum

Centripetal acceleration

Angular displacement

The unit of work in base unit is

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Kg m-1 sec-2

Kgm sec-2

Kgm2 sec-1

Kgm-1 sec-1

Energy stored in an inductor is:

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1/2L²I

1/2L²/I

_1/2LI²

1/2LI

A wire stretched to double of its length, its strain is:

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2

1

0

0.5

If the energy of photon is 10 eV and work function is 5 eV, then the a value of stopping potential will be

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50 V

2 V

5 V

15 V

The value of Rydberg constant is:

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1.0749x10⁷m^-1

1.0974 x 10⁷ m^-1

1.974 x10⁶m^-1

1.0974 x 10^-7 m^-1

The mass of beta particle is equal to the mass

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Proton

Neutron

Electron

Photon

Nuclear fission was discovered by:

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Otto Hahn

Friz strassmann

Both a and b

Michaelson

Various types of cancer are treated by

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Carbon -14

Nickel -63

Cobalt -60

Strontium -90

An ordinary glass gradually softness into a paste like state before it becomes a very viscous liquid which is possible at

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900^oC

600^oC

800^oC

100^oC

The basic circuit element in A.C. circuit which controls current.

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Resistor only

Capacitor only

Inductor only

All of these

The minimum frequency needed to emit an electron form metal surface is called:

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Work function

Threshold frequency

Quanta frequency

All of above

Power dissipated in a pure inductor is.

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Large

Small

Infinite

Zero