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# Important Questions For Class 11 Physics Chapter 7 Gravitation - PDF Download We at this platform provide you with the best possible ways to crack your board exam with a good score. Here, we will go deeper into what necessary facts and figures we need to know. Also, we will discuss Class 11 Physics chapter 7 Important Questions for your upcoming exams included in the PDF form for free.

Class 11 Physics chapter 7 Gravitation is one of the interesting chapters that talks all about how our universe works. We all know that chapter 7 Gravitation lays a pioneer position in the history of college entrance exams like IIT, NEET,and many state entrance exams. You must note that one question from this chapter was also asked in IIT JEE in the last year. A 2% weightage was also expected for Class 11 Physics chapter 7 Gravitation in NEET 2021.

Since Class 11 is a peak stage to open the doors of the board class and also to book your seat in a dream college, So it’s required that you have a good hold on the basics. For fulfilling your back-to-basics desire, we have designed solutions to NCERT Class 11 Physics Textbook of all Chapters. Free PDF download of Gravitation chp 7 Class 11 Important Questions is prepared by our subject experts teacher from the latest edition of CBSE.

## Important Topics & Sub-topics of Gravitation Class 11 Physics

In Class 11 Physics, the topic of Gravitation covers several important sub-topics. Here's an overview

 Topic Sub-Topic No. Of Questions Marks Introduction to Gravitation Gravitational force and its significance. Historical background, including the work of Newton and Kepler. Universal Law of Gravitation Statement of Newton's law of universal gravitation. Gravitational constant (G). Inverse square law and its mathematical representation. Gravitational Field Definition and concept of a gravitational field. Gravitational field strength and its relation to force. Acceleration Due to Gravity Definition of acceleration due to gravity (g). Variation of 'g' with altitude, depth, and latitude. Escape Velocity Calculation of escape velocity. Importance of escape velocity in space travel. Kepler's Laws of Planetary Motion Kepler's three laws and their significance. Relationship between Kepler's laws and Newton's law of universal gravitation. Geostationary and Polar Satellites Concept of geostationary and polar satellites. Their applications and differences. Energy of an Object in a Gravitational Field Gravitational potential energy. Gravitational potential and its relation to energy Gravitational Potential Energy of Two Bodies Calculation of gravitational potential energy for two objects.

## Class 11 Physics Chapter 7 Gravitation Weightage

The weightage of a specific chapter like "Gravitation" in Class 11 Physics can vary depending on the educational board and curriculum. However, ww can provide a general idea of how chapters are often weighted in terms of the number of marks or the percentage of the syllabus:

Examinations: In most educational systems, topics related to Gravitation are considered fundamental in physics. Therefore, it's common to see a weightage of around 6% to 10% of the total marks in Class 11 Physics examinations. This weightage can vary slightly from one board to another.

CBSE (Central Board of Secondary Education, India):  For CBSE Class 11 Physics, the chapter on Gravitation typically carries a moderate weightage. Questions related to gravitation can contribute to around 8% to 10% of the total marks in the final examination.

State Boards: The weightage may vary based on the state board's syllabus. It's advisable to check the official curriculum and examination patterns of the specific state board to get a precise idea.

Please note that these percentages are approximate and can vary. It's essential to refer to your specific curriculum and syllabus to understand the exact weightage given to the chapter on Gravitation. Additionally, the importance of this chapter extends beyond just exams, as it lays the foundation for understanding broader concepts in physics and the laws governing celestial objects.

## Tips to Solve Class 11 Physics Chapter 7 Gravitation

Solving problems related to Class 11 Physics Chapter 7, Gravitation, can be challenging, but with the right approach and strategies, you can excel in this chapter. Here are some tips to help you solve question effectively:

• Before attempting any problems, make sure you have a clear understanding of the basic concepts related to gravitation, such as the universal law of gravitation, gravitational field, and Kepler's laws.

• Gravitation problems often involve complex mathematical calculations. Practice regularly to improve your problem-solving skills and become more comfortable with the mathematical aspects of this chapter.

• Read the problem carefully to understand what is being asked in the question. You have to identify the given information and what needs to be calculated.

• Decide on the appropriate formula or concept to apply.

• Solve step by step, showing all your work.

• For problems related to the motion of objects in gravitational fields, drawing diagrams can help you visualize the situation and better understand the problem. This is especially useful for orbital mechanics and satellite problems.

• Pay close attention to units. Ensure that the units of all quantities are consistent and use appropriate unit conversions when needed.

• Gravitation problems often involve numerical values. Practice solving numerical problems to become proficient in performing calculations accurately.

•  In some cases, gravitational forces and accelerations are vector quantities. Pay attention to the direction and magnitude of vectors when solving problems.

•  Understand Kepler's laws and how they relate to planetary motion. These laws are essential when dealing with problems related to the motion of planets and satellites..

•  If you're stuck on a problem, don't hesitate to seek help from your teacher, tutor, or classmates. Sometimes, discussing a problem can lead to a breakthrough.

Remember that Gravitation is a fundamental topic with real-world applications, so understanding it thoroughly is not only essential for exams but also for building a strong foundation in physics. With practice and persistence, you can become proficient in solving problems related to this chapter.

## Benefits of Solving Class 11 Physics Chapter 7 Important Questions with Answers

Solving Class 11 Physics Chapter 7 (Gravitation) important questions with answers can offer several benefits for students:

•  Working through class 11 physics chapter 7 important questions helps reinforce your understanding of key concepts related to gravitation, including the universal law of gravitation, Kepler's laws, and gravitational field.

•  class 11 physics chapter 7 important questions with answers allows you to apply theoretical knowledge to practical problems, enhancing your ability to solve real-world physics scenarios.

•  Practicing Class 11 physics chapter 7 important questions with answers

sharpens your problem-solving skills, as you learn to break down complex problems into manageable steps.

• Practicing important physics class 11 chapter 7 with helps you become more efficient in managing your time during exams, as you get used to solving questions within time constraints.

• Solving a variety of questions of chapter 7 deepens your understanding of various aspects of gravitation, including the concept of escape velocity, satellite motion, and the calculation of gravitational forces.

• As you become more familiar with solving important physics class 11 chapter 7 problems through practice, you'll likely experience less anxiety when approaching similar questions in exams..

To make the most of this practice, it's essential to not only solve the questions but also thoroughly understand the underlying concepts and methods used. Additionally, you can time yourself to simulate exam conditions and further improve your exam performance.

Question 1: What is escape velocity, and why is it important?

Answer: Escape velocity is the minimum velocity required for an object to escape the gravitational pull of a massive body, such as a planet or a celestial body. It's essential for spacecraft and objects leaving the Earth to reach space or other celestial destinations.

Question 2: What are Kepler's laws of planetary motion, and how do they relate to gravitation?

Answer: Kepler's laws describe the motion of planets in orbit around the Sun. They are:

• The law of ellipses: Planets move in elliptical orbits with the Sun at one focus.

• The law of equal areas: A line joining a planet to the Sun sweeps out equal areas in equal time.

• The law of harmonies: The square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit. These laws are related to gravitation because they are consequences of the gravitational force acting on planets.