Gravitation – Kepler's Laws, Satellites, Geostationary Orbits
Physics · Grade 11 · Week 23 · 25 questions
This Grade 11 physics unit on Gravitation develops your understanding of Kepler's Laws, Satellites, and Geostationary Orbits. Solid foundations here make later chapters on mechanics, electromagnetism, and modern physics much easier.
What you'll practise
- State and apply Kepler's Laws
- Derive Satellites
- Identify Geostationary Orbits
- Apply gravitation concepts to NCERT exercise and exemplar problems
All 25 questions in this Gravitation – Kepler's Laws, Satellites, Geostationary Orbits quiz
Grade 11 Physics — Gravitation – Kepler's Laws, Satellites, Geostationary Orbits: 25 practice questions with instant scoring and explanations.
- Kepler's first law (law of orbits):
- Kepler's second law (law of areas):
- Kepler's third law (law of periods):
- Kepler's second law is a consequence of:
- In elliptical orbit, planet is fastest at:
- Planet is slowest at:
- A geostationary satellite has orbital period:
- Height of geostationary satellite above Earth:
- Orbital radius of geostationary satellite (approx):
- Geostationary satellite orbits in:
- Direction of motion of geostationary satellite:
- Polar satellites have low heights and scan:
- Uses of geostationary satellite:
- A satellite's speed in orbit at radius r from Earth's centre:
- Orbit at Earth's surface (ignoring atmosphere) is possible at:
- Kepler's third law for two planets: T₁²/T₂² = :
- A satellite revolves with T=2 hours at r=r₀. At r=4r₀, T is:
- Planets move around Sun due to:
- Areal velocity = dA/dt = :
- Eccentricity of a circular orbit:
- Eccentricity of parabolic orbit:
- Bound orbits have total energy:
- Unbound trajectories have total energy:
- Two satellites revolve at r₁ and r₂=2r₁. Ratio of periods T₁:T₂:
- Kepler's laws apply to:
Question 1 of 250 correct so far