Daily Practice Problems undefined Gravitation

Question 1:

Two planets, X and Y, have masses in the ratio of 2:3 and radii in the ratio of 3:2. If the acceleration due to gravity on planet X is 8 m/s², what is the acceleration due to gravity on planet Y? [Level: Hard]

(a) 4 m/s²

(b) 9 m/s²

(d) 27 m/s²

Question 2:

A satellite of mass m is in a circular orbit around a planet of mass M and radius R. If the gravitational potential energy of the satellite is U, what is the kinetic energy of the satellite? [Level: Moderate]

(a) U

(b) 2U

(c)

(d)

Question 3:

The escape velocity from the surface of a planet is given by √(2gR), where g is the acceleration due to gravity and R is the radius of the planet. If the escape velocity from Earth is 11.2 km/s, what would be the escape velocity from a planet having twice the radius of Earth and the same acceleration due to gravity? [Level: Hard]

(a) 11.2 km/s

(b) 15.8 km/s

(d) 33.6 km/s

Question 4:

Two particles, each of mass m, are initially at rest and are a distance r apart. Due to their mutual gravitational attraction, they move towards each other and collide. What is the speed of each particle at the instant of collision?

[Level: Hard]

(a)

(b)

(c)

(d)

Question 5:

A small object of mass m is released from rest at a height h above the surface of a planet. Neglecting air resistance, what is the ratio of the time taken by the object to fall the first half of the distance to the time taken to fall the second half? [Level: Moderate]

(a) 1:1

(b) 1:2

(d) 2:1

Question 6:

The gravitational force between two point masses is F. If the distance between the masses is halved and the masses are doubled, what would be the new gravitational force between them? [Level: Easy]

(a) 2F

(b) F

(d) 16F

Question 7:

A satellite is in a circular orbit around Earth at a height equal to the radius of Earth. If the radius of Earth is R and the mass of Earth is M, what is the period of revolution of the satellite? [Level: Moderate]

(a)

(b)

(c)

(d)

Question 8:

Two-point masses, m1 and m2, are located at a distance of 5 meters from each other. What is the magnitude of the gravitational force between them if m1 = 2 kg and m2 = 3 kg? [Level: Easy]

a) 1.25 x 10^-10 N

b) 1.60 x 10^-9 N

c) 1.75 x 10^-8 N

d) 1.95 x 10^-7 N

Question 9:

The mass of the Earth is approximately 6 x 10²⁴ kg and its radius is approximately 6.4 x 10⁶ m. What is the escape velocity from the surface of the Earth? [Level: Easy]

a) 7.9 km/s

b) 10.0 km/s

c) 11.2 km/s

d) 12.4 km/s

Question 10:

A spaceship is traveling in deep space away from any massive objects. Suddenly, the spaceship's engines fail, and it starts drifting freely in space. How would the absence of gravitational forces affect the motion and behavior of objects inside the spaceship? [Level: Easy]

Question 11:

A satellite is in a circular orbit around the Earth at a height equal to the radius of the Earth. If the satellite's mass is doubled while keeping the radius unchanged, the time period of the satellite's revolution will become: [Level: Moderate]

(a) √2 times the original time period

(b) 2 times the original time period

(d) half the original time period

Question 12:

A projectile is launched vertically upwards from the surface of the Earth with a speed of 100 m/s. What is its maximum height above the surface of the Earth? [Level: Hard]

a) 10 km

b) 5 km

c) 30 km

d) 40 km

Question 13:

Two planets have masses of 6 x 10²⁴ kg and 3 x 10²⁴ kg, respectively. If they are separated by a distance of 4 x 10⁸ m, what is the gravitational force between them? [Level: Easy]

a) 2.4 x 10²⁰ N

b) 4.8 x 10²⁰ N

c) 9.6 x 10²⁰ N

d) 7.5 x 10²¹ N

Question 14:

A satellite is in a circular orbit around the Earth with a radius of 4 x 10⁷ m. What is the velocity of the satellite? [Level: Moderate]

(a) 4.4 km/s

(b) 5.5 km/s

(d) 7.7 km/s

Question 15:

The gravitational potential energy of an object of mass m at a height h above the surface of the Earth is given by U = mgh, where g is the acceleration due to gravity. What is the gravitational potential energy of a 10 kg object at a height of 100 m above the surface of the Earth? [Level: Moderate]

a) 1,000 J

b) 10,000 J

c) 100,000 J

d) 1,000,000 J

Question 16:

A planet has a mass of 2 x 10²⁴ kg and a radius of 3 x 10⁶ m. What is the acceleration due to gravity at a distance of 2 x 10⁶ m from the center of the planet? [Level: Easy]

a) 1.6 m/s²

b) 3.3 m/ s²

c) 6.4 m/ s²

d) 12.8 m/ s²

Question 17:

Two objects of masses M and 2M are separated by a distance d. At what distance from the center of mass of the system will the gravitational field intensity be zero? [Level: Hard]

(a)

(b)

(c)

(d)

Question 18:

A satellite is in an elliptical orbit around the Earth. Which of the following statements is true regarding the satellite's speed at different points of the orbit? [Level: Moderate]

(a) The speed is maximum at the apogee and minimum at the perigee.

(b) The speed is maximum at the perigee and minimum at the apogee.

(d) The speed increases with increasing distance from the Earth.

Question 19:

Assertion: The escape velocity from a celestial body depends only on its mass and not on its radius.

Reason: The escape velocity is determined by the gravitational pull of the celestial body, which depends on its mass but not on its size. [Level: Moderate]

(a) Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

(b) Both the assertion and reason are true, but the reason is not the correct explanation of the assertion.

(d) The assertion is false, but the reason is true.

Question 20:

A planet has a mass M and radius R. If the escape velocity from the planet's surface is v, what will be the escape velocity if the mass of the planet is doubled while keeping the radius unchanged? [Level: Moderate]

(a)

(b) v

(d) 4v

**********

Problem-solving on NEET Physics Gravitation NCERT Chapter 8 after learning a theoretical concept is crucial for several reasons:

Application of Knowledge: Problem-solving allows you to apply the theoretical concepts of the topic NEET Physics Gravitation you have learned to real-life situations. It helps you bridge the gap between abstract knowledge and practical scenarios, making the learning more relevant and meaningful.
Understanding Deeper Concepts: When you encounter problems related to a theoretical concept that you learned in NEET Physics Gravitation NCERT Chapter 8, you are forced to delve deeper into its intricacies. This deeper understanding enhances your comprehension of the subject and strengthens your grasp of the underlying principles.
Critical Thinking: Problem-solving encourages critical thinking and analytical skills. It requires you to analyze the problem, identify relevant information, and devise a logical solution. This process sharpens your mind and improves your ability to approach complex challenges effectively.
Retention and Recall: Actively engaging in problem-solving reinforces your memory and improves long-term retention. Applying the concepts learned in Gravitation NEET Physics in practical scenarios helps you remember them better than passive reading or memorization.
Identifying Knowledge Gaps: When you attempt to solve problems, you may encounter areas where your understanding is lacking. These knowledge gaps become evident during problem-solving, and you can then focus on filling those gaps through further study and practice. You can refer Gravitation NEET Physics Notes on LearnoHub.com
Boosting Confidence: Successfully solving problems after learning a theoretical concept boosts your confidence in your abilities to handle Gravitation. This confidence motivates you to tackle more challenging tasks and improves your overall performance in the subject.
Preparation for Exams and Challenges: Many exams, especially in science, mathematics, and engineering, involve problem-solving tasks. Regular practice in problem-solving prepares you to face these exams with confidence and perform well. It is also advised to take tests on Gravitation NEET Physics Online Tests at LearnoHub.com.
Enhancing Creativity: Problem-solving often requires thinking outside the box and exploring various approaches. This fosters creativity and innovation, enabling you to come up with novel solutions to different problems.
Life Skills Development: Problem-solving is a valuable life skill that extends beyond academics. It equips you with the ability to tackle various challenges you may encounter in personal and professional life.
Improving Decision Making: Problem-solving involves making decisions based on available information and logical reasoning. Practicing problem-solving enhances your decision-making skills, making you more effective in making informed choices.

In summary, problem-solving after learning a theoretical concept on CBSE Gravitation NEET Physics is an essential part of the learning process. It enhances your understanding, critical thinking abilities, and retention of knowledge. Moreover, it equips you with valuable skills that are applicable in academic, personal, and professional contexts.

You must have heard of the phrase “Practice makes a man perfect”. Well, not just a man, practice indeed enhances perfection of every individual.

Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.

All About Daily Practice Problems on NEET Physics Gravitation NCERT Chapter 8

Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on NEET Physics Gravitation NCERT Chapter 8 useful.

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