Question # 1

Dependent quantities are taken on

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x - axis

-ve x -axis

y-axis

- y-axis

The value of gravitational constant is, G is:

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6.67× 10-10 Nm2/Kg2

6.67× 10-11 Nm2/Kg2

6.67× 10-11

None

The amount of matter in a body is called:

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Velocity

Momentum

Mass

Force

Land and Sea breezes are the results of:

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Conduction

Convection

Radiation

Conduction and radiation

If the velocity of moving body in circle is doubled, then its centripetal force is

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Double

Half

Four times

Remain

If mass of body is 10 kg travelling with speed of light, how much energy is generated?

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E = 9 × 1017 J

E = 9 × 1015 J

E = 9 × 1018 J

E = 9 × 1016 J

Earth's gravitational force of attraction vanishes at

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6400 km

Infinity

42300 km

1000 km

Gravitational force is a

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Contacted force

Non-contact force

Electrical force

Charging force

Einstein mass energy equation is:

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E= mc²

E= m²c

E = 1/2 mc²

2 mc²

Transfer of heat between two bodies which are at same temperature is:

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Maximum

Minimium

Positive

Zero

Water is _________ conductor:

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Best

Bad

Good

Poor

The half life of plutonium²³⁶Pu₉₄is:

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2.00 years

2.35 years

2.79 years

2.85 years

The product of frequency and wavelength is equal to:

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Time period

Amplitude

Wave speed

Wave energy

The particles emitted from a hot cathode surface are:

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Positive ions

Negative ions

Protons

Electrons

Which of the following is not processing:

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Arranging

Manipulating

Calculating

Gathering

It mass of bob o a simple pendulum is doubled, its time period.

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is doubled

become four times

remains same

none of the above

Analogue quantity is:

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Time

Pressure

Distance

All of these

Micro waves are used in:

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Radio

Television

Mobile phone

All of these

The speed of sound in a liquid is …………..than that in gases:

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Ten times

Fifteen times

Five times

Two times

battery is one of the source of:

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heat

light

current

sound

Which element is used for the monitoring of thyroid glands?

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Iodine- 131

Phosphorus-32

Carbon-14

Potassium-40

The particles emitted from a hot cathode surface are:

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Positive ions

Negative ions

Proton

Electron

How many orbiting satellites from the Global positing system.

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3

12

24

22

The distinguish between transverse and longitudinal wave_______ is used.

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Refraction

Interference

Diffraction

polarization

The rate of change of momentum is equal to

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Impulse

Torque

Velocity

Force

Size of the molecules is much smaller as compared to the

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Mass of the molecules

Distance between the molecules

Density of the molecules

Volume of the molecules

The efficiency of heat engine whose sink is at 17 ^oC and source at 200 ^oC is.

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38%

63%

80%

90%

The amplitude of a vibrating body at resonance in vacuum is

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Minimum

Maximum

Zero

Infinite

Environmental crisis are also known as

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Population crisis

Entropy crisis

War crisis

Mass crisis

A quantity which indicates the state and direction of a vibrating body is known as

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Time period

Amplitude

Phase

Frequency

If 20 waves passes through he medium in 2 sec of 10 ms-1 then he wavelength is.

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200 m

2 m

1 m

0.5 m

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

More details of an object can be seen with a microscope by using

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Green light

Red light

Yellow light

Blue light

Target material used in x-rays tube have following properties.

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High atomic number and high melting pouint

High atomic number and low melting pouint

Low atomic number and low melting pouint

High atomic number only

The ratio of potential barriers of Ge to Si at room temperatrue is.

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7:3

1:3

2:5

3:7

At resonance frequency, the impedance of RLC series circuit is.

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Maximum

Minimum

Zero

Infinite

Energy stored in inductor is.

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1/2 L I²

1/2 LI

1/2 L2I

1/2 L2I2

A soft iron cylinder is placed inside coil galvanometer to:

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Make field circular and strong

Make field radial and weak

Make field radial and strong

All of above

A diode characteristic curve is a plot between

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Current and time

Voltage and time

Voltage and current

Forward voltage and reverse voltage

The electric field in some region of of space is uniform in magnitude and direction. Which one of the following five statements best desccribes the volume charge density (ρ) , in this region of space?

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ρ = 0

ρ decreases linearly in the direction of the electric field

ρ increases linearly in the direction of the electric field

ρ has a uniform value throughout the region

Concept of electric field lines was given by:

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Michelson

Henry

Michael faraday

Oersted

Number of Isotopes of Neon gas are

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2

3

4

1

The device which allows only the flow of D.C. is.

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Capacitors

transformer

Inductor

Generator

Net charge enclosed by Gaussian surface is:

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zero

maximum

depend on intensity

none of all