Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion: Orbit of a satellite is within the gravitational field of earth whereas escaping is beyond the gravitational field of earth.
Reason: Orbital velocity of a satellite is greater than its escape velocity.
In the light of the above statements, choose the correct answer from the options given below
Assertion: Orbit of a satellite is within the gravitational field of earth whereas escaping is beyond the gravitational field of earth.
Reason: Orbital velocity of a satellite is greater than its escape velocity.
In the light of the above statements, choose the correct answer from the options given below
- If both assertion and reason are true and reason is the correct explanation of assertion
- If both assertion and reason are true but reason is not the correct explanation of assertion
- If assertion is true but reason is false
- If both assertion and reason are false
The Correct Option is C
Solution and Explanation
Answer (c) If assertion is true but reason is false
Assertion: Orbit of a satellite is within the gravitational field of earth whereas escaping is beyond the gravitational field of earth. (correct)
Reason: Orbital velocity of a satellite is greater than its escape velocity. (Not True)
Top Questions on Gravitation
A small point of mass \(m\) is placed at a distance \(2R\) from the center \(O\) of a big uniform solid sphere of mass \(M\) and radius \(R\). The gravitational force on \(m\) due to \(M\) is \(F_1\). A spherical part of radius \(R/3\) is removed from the big sphere as shown in the figure, and the gravitational force on \(m\) due to the remaining part of \(M\) is found to be \(F_2\). The value of the ratio \( F_1 : F_2 \) is:
- JEE Main - 2025
- Physics
- Gravitation
- Two spherical shells of radii $R$ and $2R$, masses $M$ and $2M$ respectively are arranged concentrically. The net gravitational force acting on a particle of mass $m$ placed at a distance of $23R$ from the common centre of the shells is ($G$ = Universal gravitational constant)
- TS EAMCET - 2025
- Physics
- Gravitation
- The weight of a body at a height of 3$R_E$ from the surface of the earth is 90 N, where $R_E$ is the radius of the earth. The weight of the same body at a height of $R_E$ from the surface of the earth is:
- TS EAMCET - 2025
- Physics
- Gravitation
- A body is projected from the earth's surface with a speed \(\sqrt{5}\) times the escape speed (\(V_e\)). The speed of the body when it escapes from the gravitational influence of the earth is
- TS EAMCET - 2025
- Physics
- Gravitation
- Time taken by the ball to reach the ground.
Velocity of the ball on reaching the ground.
Questions Asked in AIIMS exam
- 1028 grams of seawater sample contains 7 mL of dissolved oxygen ($ \text{O}_2 $). What is the concentration of oxygen in parts per million (ppm)?
- AIIMS - 2024
- Environmental Chemistry
- Explain why ortho-nitrophenol is more steam volatile than para-nitrophenol.
- AIIMS - 2024
- Hydrogen Bonding
- Two blocks of mass \( 20\,\text{kg} \) and \( 30\,\text{kg} \) are placed in contact on a smooth horizontal surface. A force \( F = 60\,\text{N} \) is applied to the \( 20\,\text{kg} \) block. Find the force exerted by the \( 20\,\text{kg} \) block on the \( 30\,\text{kg} \) block.
- AIIMS - 2024
- Newton's Laws of Motion
- Which of the following is a globular protein?
- AIIMS - 2024
- Biomolecules
What is the correct IUPAC name for the following compound?- AIIMS - 2024
- Organic Chemistry - Some Basic Principles and Techniques
Concepts Used:
Gravitation
In mechanics, the universal force of attraction acting between all matter is known as Gravity, also called gravitation, . It is the weakest known force in nature.
Newton’s Law of Gravitation
According to Newton’s law of gravitation, “Every particle in the universe attracts every other particle with a force whose magnitude is,
- F ∝ (M1M2) . . . . (1)
- (F ∝ 1/r2) . . . . (2)
On combining equations (1) and (2) we get,
F ∝ M1M2/r2
F = G × [M1M2]/r2 . . . . (7)
Or, f(r) = GM1M2/r2
The dimension formula of G is [M-1L3T-2].