Gravitation:

The most interesting and important Subject Physics of 9th Class Chapter-05. Student want to know the important Questions and  physics notes for 9th class , to prepare it according to BISE Punjab. We are providing the Solution of Student Problems.

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Physics Ch-05, 9th

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1 / 30

Earth’s Gravitational force of attraction vanishes at_________

1000km

Infinity

42300km

6400km

2 / 30

Height of the Geostationary Satellite above the surface of earth is_________

42300 km

3600 km

36000 km

1000 km

3 / 30

If the distance between two masses is half, then the Force of Gravitation becomes_______

Half

One Fourth

Doubled

Four Times

4 / 30

As we go up the value of G becomes_________

Increases

Decreases

Doubled

Unchanged

5 / 30

Unit of Gravitational Field Strength is_____

N kg-1

J

Nm

N

6 / 30

Value of g increases with the ___________

increase in altitude

Increase in mass of body

none of these

Decrease in altitude

7 / 30

An Artificial Satellite keeps on revolving around the earth in different orbits with uniform speed due to the?

 

Coulomb Force

Gravitational Force

Frictional Force

Electromagnetic Force

8 / 30

Which one of the following converts light energy into electrical energy?

Photocell

Electrical Generator

Electrical cell

Electric Bulb

9 / 30

The mass of Earth is approximately_________

1. 6.9 x 10²⁴ kg
2. 6.0 x 10^-24 kg
3. 6.0x 10²⁴ kg
4. 5500 x 10²⁴ kg

which one is Correct Answer ?

Option-1

Option-2

Option-3

Option-4

10 / 30

What will be the value of G if Mass of the Earth becomes Four Times_______

No Change

Four Times

Doubled

One Fourth

11 / 30

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

1000N

100N

160N

1600N

12 / 30

The orbital speed of a low orbit satellite is _____________

1. Zero
2. 8ms^-1
3. 800ms^-1
4. 8000ms^-1

which is Correct option ?

Option-1

Option-4

Option-3

Option-2

13 / 30

If a Rocket is fired vertically with a speed of ________, it will start revolving around the earth.

8 kms-1

8 ms-1

11.2 kms-1

9.8 ms-1

14 / 30

Weight of the body of Mass 10-kg on the surface of Moon_______

None of these

1.62 N

160 N

16N

15 / 30

The altitude of geostationary orbits in which communications satellites are launched above the surface of Earth is ____________

1000km

6400km

42300km

850km

16 / 30

_________predicted about artificial satellites about 300 years ago.

Einstein

Galileo

Faraday

Newton

17 / 30

The Force which pulls the object towards the center of circle is known as ________force.

Frictional

Gravitational

Coulomb

Centripetal

18 / 30

When an object is at a height equal to radius of Earth above the surface of the earth. What is the value of gn?

2g

4g

9/2

9/4

19 / 30

If Mass of two bodies is 1kg and distance between their centers is 1m then the gravitational force will be equal to________

g

G

V

None of these

20 / 30

The value of g at a height one earth’s radius above the surface of Earth is _________

1/3g

1/4g

1/2g

2g

21 / 30

Speed of GPS Satellite is______

3.87 kms-1

5.0 kms-1

7.9 kms-1

5.6 kms-1

22 / 30

The SI unit of gravitational force is______

Nm2kg-2

None of these

Newton

ms-2

23 / 30

What is not true about g?

g is different at different places

g is greater at poles

g decrease as go higher

g is less at poles

24 / 30

Radius of Earth is________

1. 6.4.x 10⁶ km
2. 6.4x10⁶m
3. 6x 10⁶m
4. 6 x 10⁶ km

which is the Correct Option ?

Option-2

Option-4

Option-1

Option-3

25 / 30

If the weight of an object on the surface of earth is W. Its weight on the surface of moon will be___________

W/6

W/4

6W

W/8

26 / 30

In System International, the value of G is________

1. 6.4 x 10⁶ Nm²kg^-2
2. 6.4.x 10^-11 Nm²kg^-2
3. 6.67 x 10¹¹ Nm²kg^-2
4. 6.67 x 10^-11 Nm²kg^-2

which is the Correct Answer ?

Option-4

Option-1

Option-2

Option-3

27 / 30

Distance of Moon from Earth is________

3,80,000 km

30,000 km

3,000,000 km

38,000 km

28 / 30

On Mountains our weight will be _________ as compared to Weight on the surface of Earth

Equal

Greater

Less

None of these

29 / 30

Gravitational Force on the surface of Earth is equal to_______

W

g

All of these

G

30 / 30

Relative velocity of Geostationary satellite with respect to earth is_______

Zero

7.9 kms-1

11.2 kms-1

9.8 ms-1

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MCQs PHYSICS 9TH CHAPTER 05

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NUMERICALS PHYSICS 9TH CHAPTER 05

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LONG QUESTIONS PHYSICS 9TH CHAPTER 05

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TEXT BOOK EXERCISE SOLUTION PHYSICS 9TH CHAPTER 05

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Physics Notes, Numerical for Class 9th

If your are talking about the Study material of Class 9th Physics Notes chapter-05, Physics Notes for 9th Class Chapter-05, eStudent.pk is providing same helpful content against each chapter of Physics Class 9 notes pdf downloadable format of PTB book. For each chapter  there are short questions, long question, multiple-choice questions, and numerical. Similarly, in the case of extra material, there are long questions, short questions, and multiple-choice questions. So, every student can check these notes and prepare for exams.

How did we prepare from these notes? any Student of 9th class should prepared all the long question of each chapter first and practiced all the numerical as well in good grip. Then he should skimmed through all the multiple-choice question and short questions of same chapter. That should be enough for him to prepare a chapter and secure good marks in exams. All reader should use this technique if you like this.

Chapter wise PDF Notes / Problems / Numerical Solution of Physics

                 Chapter-01 – Physical Quantities and Measurements

                 Chapter-02 -Kinematics

                 Chapter-03 – Dynamics

                 Chapter-04 – Turning Effect of Forces

                 Chapter-05 – Gravitation

                 Chapter-06 – Work and Energy

                 Chapter-07 – Properties of Matter

                 Chapter-08 – Thermal Properties of Matter

                 Chapter-09 – Transfer of Heat

                 Pairing Scheme for 2021 – Physics 9th Class