Question # 1

In symbols, Newton's second law of motion is stated as

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F = m/a

F = ma

F = a/m

F = ma²

In measurement 1.032 numbers of significant figure are.

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1

2

3

4

A simple way to know how much a body is hot or cold is

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Our sense of touch

Termometer

Thermostat

Setback state

Wood, cork, cotton, wool, rubber are the eamples of:

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Conductor

Thermal conductor

Insulator

both a & b

Most of the matter that fills the universe is in state:

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Solid

Plasma

Liquid

Gas

The velocity of bodies falling down

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Dwscreses

Increases

Zero

Constant

Tan 𝜽 is equal to:

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Perpendicular/Hypotenuse

Base / Perpendicular

Base/Hyp

Perpendicular/Base

The unit of momentum is :

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kgms^-1

kgms^-2

m sec

None

Which of the following is an insulator?

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Wood

Glass

Plastic

Steel

The numebr .00580 is scientific notation is.

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5 .80 x 10⁵

5 .80 x 10^-4

5 .80 x 10^-3

5 .80 x 10^-2

Einstein mass energy equation is:

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E = mc

E = m2 c

E = mc2

E2 = mc

The speed of sound of water at 25 ^oC is:

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1530 ms^-1

1531 ms^-1

1560 ms^-1

1570 ms^-1

The current which does not change its direction is called:

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A.C

D.C

Conventional

Transient current

The lines will be in the form of concentric circles, if conductor is:

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Circular

Straight

Solenoid

None of these

The commercial unit of electrical energy is:

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Joule

Watt

Kilowatt hour

Electron volt

The index of refraction depends on:

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The focal length

The speed of light

the image distance

The object distance

Which types of image is produced by the converging lens of human eye if it view a distant object?

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Real , erect, same size

Real, inverted, diminshed

Virtual, erect,diminshed

Virtual, inverted, magnified

The symbol of AND operation is:

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+

-

.

*

If one of the resistors in a parallel circuit is removed, the total resistance will be:

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Doubled

Decreased

Increased

Remain same

A converging mirror with a radius of 20 cm 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

If the distance is nspring is 'x' of mass 'm' attached with a spring then restoring force is:

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F =ma

F =kx

F = mx

F= m/a

When we heat the metal at high temperature they emit:

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Holes

Protons

Neutrons

Electrons

Vector has both of its components are negative lies in

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1st quadrant

2nd quadrant

3rd quadrant

4th quadrant

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 product of time period and frequency is.

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Zero

1

2

3

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%

Turning of radio is example of.

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Mechanical resonance

Electrical resonance

Physical resonance

Biological resonance

For an ideal gas, the internal energy is directly proportional to.

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Pressure

volume

Mass

Temperature

Dot product of two non zero vectors is zero it angle between them is.

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30^o

60^o

45^o

90^o

The light signal in Opticla fiber must be regenerated by advice called.

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Regenerator

Generator

Repeater

Diode

The product of rotational inertial 'I' and angular velocity ' w' is equal to.

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Torque

Linear momentum

Angular momentum

Force

The components of a vector which are perpendicular to each other are called

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Horizontal components

Vertical components

Rectangular components

All of these

The magnifying power of a convex lens of focal lendth 10 cm is

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7

9.6

11

3.5

A proton consists of quarks which are.

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Two up, one down

One up, two down

All up

All down

A wire uniform cross-section. A length L and resistance R is cut into two equal parts. The resistivity of each part will be:

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Doubled

Halved

Remain the same

One fourth

In Wilson cloud chamber, if tracks are thick, straight and continuous, then particle is

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a-particles

ß-particles

Y-rays

All

Energy stored in inductor is.

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1/2 L I²

1/2 LI

1/2 L2I

1/2 L2I2

Example of ductile substance is.

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Glass

Wood

Lead

Oxygen

The binding energy per nucleon is maximum for

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Helium

Iron

Potassium

Radium

For Holography we use

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X ray

Laser

gama rays

Beta rays

When a conductor moves across a magnetic field an emf is set up this emf is called.

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Variable emf

Constant emf

Back emf

Induced emf

In 1905, the special theory of relativity was proposed by

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Einstein

Bohr

Maxwell

De Broglie

The motional emf depends upon the

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Length of conductor

Speed of conductor

Strength of magnet

All of these

The first orbit in the hydrogen atom has a radius.

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0.53 nm

0.053 nm

0.0053 nm

0.00053 nm