Question # 1

Leslie cube have faces:

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2

3

4

5

The value of g on moon's surface is 1.6 ms^-2. What will be the weight of a a 100 kg body on the surface of the moon?

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100 N

160 N

1000 N

1600 N

________ is the height of an object or place above sea level.

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Altitude

Depth

Sun

Moon

Rate of change of momentum is equal to:

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Mass

Torque

Weight

Force

The first man who gave the idea of gravity:

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Hero

Einstein

Newton

Faraday

Transfer of heat by the actual movement of molecules from one place to the other is called

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conduction

convection

radiation

waves

Dull black surface is a best:

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Emitter

Absorber

Reflector

None of these

What flower is known as natural thermometer?

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Rose

Barasicca

Crocus

Tulip

Absolute zero is equal to

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0 K

273

-273 K

373 K

Near the earth surface the gravitational field strength is:

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1 N kg^-1

10 N kg^-1

100 N kg^-1

101 N kg^-1

A silvery white surface is a :

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Worst reflector

Best reflector

Worst absorber

Best absorber

Which of the following tasks are performed by most of the algorithms?

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Input

Out put

Processing

All of these

An electric current in conductors is due to the flow of:

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Positive ions

Negtive ions

Positive charge

free electron

The S.I unit of Spring constant is:

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Nm

N

Nm-1

Ns

Totally reflecting prism turns the incident ray at an angle of:

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90^o

60^o

75^o

45^o

Which of the following quantities is not change during refraction of light:

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Its direction

Its speed

Its frequency

Its wavelength

Radio waves are:

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Electric waves

Electromagnetic waves

X-rays

Radio active ways.

A and B are the two inputs of a NOR gate. Its output would be 1 when:

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A = 1, B = 1

A = 0 , B = 1

A = 1, B = 0

A = 0 , B = 0

If 2 joules of energy is required to transfer one coulomb of charge from one point to another, the potential difference between these points will be:

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1V

2V

4V

6V

The relation between v,f andλ of a wave is:

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vf=λ

fλ = v

vλ =f

v=λ/f

When you rub a plastic rod against your hair several times and put it near some bits of paper, the pieces of papers are attracted towards it. What does this observation indicate?

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the rod and the paper are oppositely charged

the rod acquires a positive charge

the reod and the paper have the same charges

the rod acquires a negative charge

Snell' law is:

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n = sin<x/sin <r

n=sin <i/sin<r

n = sin <r/sin<i

<i/<r

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

When a fore of 100 N is acting on an object along x-axis then its vertical component will be.

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50 N

0 N

25 N

10 N

Velocity of sound is independent of

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Temperature

Density

Pressure

Medium

A force of 10 N acts on a body of mass 5 kg in one second. The change in its momentum will be.

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10 kgms-1

50 kg ms-1

2 kg ms-1

20 kg ms-1

The value of solar constant.

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1.4 kW m-2

1.0 kW m-2

1.6 kW m-2

2 kw m-2

The relation between the speed and hoop can be written as

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2

4

1/2

1/4

Sound travel faster in

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CO2

H2

O2

He

Work is negative when angle between F and d is

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45^o

₀^o

90^o

180^o

Distance covered by a freely falling body is 2 seconds will be

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9.8 m

19.6 m

44.4 m

49 m

The flow of a fluid is of

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One type

Two types

Three types

Four type

The dot product of two vectors A and B will be zero, if angle between A and B is

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Zero

30^o

90^o

180^o

Which one is photo conductor.

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Copper

Selenium

Mercury

Aluminium

Concept of the electric field lines is introduced by

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Coulomb

Faraday

Einstein

Joseph henry

The numerical value of Compton wavelength is equal to

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3.43 x 10^-12 m

1.43 x 10^-12m

2.43 x 10^-12m

0.43 x 10^-12m

Balmer series lies in

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Visible region

Invisible region

Ultraviolet region

Infrared region

Choke consumes extremely small

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Current

Charge

Power

Potential

the force between two charge is 28 N. If paraffin wax of relative permittivity 2.8 is introduced between the charges as medium, then the force reduces to.

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25 N

20 N

10 N

15 N

The principle regarding the dual nature of light was first discovered by

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Compton

J.J.Thomson

De-Broglie

Heisenberg

The energy of 4th Orbit in hydrogen atom is.

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-2.51 eV

-3.50 eV

-13.60 eV

-0.85 eV

The binding energy per nucleon is maximum for

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Helium

Iron

Potassium

Radium

If the kinetic energy of a free electron doubles, its de Broglie wavelength changes by the factor.

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√2

1/√2

2

1/2

If V_rms be the root mean square value of emf then its peak to peak value is given by