QuizPhysics Quiz Physics Quiz Keplers Law For IIT JEE NEET AIIMS Exams 2023 January 5, 2023 0 Kepler’s Law Kepler’s law explains the motions of planets in the solar system. Kepler’s First Law: All the planets move around the sun in elliptical orbits with the sun at the focus. Kepler’s Second Law: The line joining the planet to the sun sweeps out equal areas in an equal interval of time. ΔA is the area swept Δt is the time interval Kepler’s Third Law: This law states that the square of the time period (P) is directly proportional to the cube of the semi-major axis of its orbit. P2 ∝ a3 Q1: When a planet orbits the Sun, one of the foci of the elliptical orbit is The axis The perihelion The centre The Sun Q2: What has an eccentricity of zero? A straight line A large ellipse A circle A small ellipse Q3: An Astronomical Unit, or AU, is the average distance between The Sun and Neptune The Sun and Earth The Earth and the Moon The Sun and Mercury Q4: Kepler’s second law is known as The Law of Orbits The Law of Areas The Law of Periods The Law of Gravity Q5: Kepler’s 2nd law deals with The shape of the planet’s orbits The speed/area the planet travels The length of time it takes the planet to orbit the sun Time travel Q6: Kepler’s third law is known as The Law of orbits The Law of Areas The Law of periods The Law of gravity Q7: The formula for Kepler’s third law is P^3 ∝ a^2 P^3 ∝ a^3 P^2 ∝ a^2 P^2 ∝ a^3 Q8: Kepler’s first law states that the orbits of the planets are oval in shape or Ellipses Perfect circles Squares triangles Q9: The Kepler’s first law is known as The law of orbits The law of areas The law of periods The law of gravity Q10: The farther away a planet is from the sun, the …………. it takes it to orbit the sun once Longer Shorter
