Practice Kepler'S Law Multiple Choice Questions with Answers Quiz-2

Q.1.

When the mass of the objects increases the gravitational force between them

decreases
increases
no change
Both A & B

Q.2.

Who proposed Earth centered model?

Copernicus
Ptolemy
Kepler
Tycho Brahe

Q.3.

Types of celestial coordinate system

Latitude and longitude
Ecuatorial and horizontal
None
All of above

Q.4.

What family is he from?

His parents was poor
He didn't have a family

Q.5.

What is the second law of Kepler ?

All planets move around the Sun in elliptical orbits, with the Sun as one focus of the ellipse.
The square of the period of any planet is proportional to the cube of the semimajor axis of its orbit.
The radius vector of a planet sweeps over in equal areas in equal intervals of time.
None of these

Q.6.

What is the third law of Kepler

The square of the period of any planet is proportional to the cube of the semimajor axis of its orbit.
None

Q.7.

What is the line connecting the sun and planet

Line
Area
Imagine
Radius vector

Q.8.

Firs law of Kepler?

None
The orbit of planet is an ellipse with the Sun at one of the two foci
The radius vector of a planet sweeps over equal areas in equal time intervals of time.
The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit

Q.9.

If r represents the radius of the orbit of a satellite of mass m moving round a planet of mass M the velocity of the satellite is given by

v2 = GMmrv^2\ =\ \frac{GMm}{r}v2 = rGMm
v2 = gMRv^2\ =\ \frac{gM}{R}v2 = RgM
v=\frac{GMm}{r^2} v= r 2 GMm
V= ( r GM )

Q.10.

What is the reason for the motion of the moon on its orbit?

The gravitational force exerted by the sun
The gravitational force exerted on the Moon by the earth

Q.11.

What is the correct formula to calculate eccentricity?

Focal distance / major axis length
major axis length / minor axis length
minor axis length / major axis length
All of above

Q.12.

The factors that can determine the force between two objects include all of the following except

distance between the 2 objects
diameter of the objects

Q.13.

Where are the focal points located in a perfect circle?

close together
on top of each other

Q.14.

What will result in the most eccentric elliptical orbit

when the focal points are on top of one another
then the focal points are farthest apart
when the focal points are closest together
All of above

Q.15.

What is the name of the backward motion of planets that cannot be explained by the geocentric model?

retrograde motion
revolutionary motion

Q.16.

Which model of the solar system can explain all observations

geocentric model
heliocentric model

Q.17.

What is it called when earth reaches the point in orbit when it is farthest from the sun?

Perihelion
Aphelion

Q.18.

Earth will travel fastest in its orbit when

the earth is closest to the sun (January 3rd)
The earth is closest to the sun (July 3rd)

Q.19.

Which statement correctly describes when the earth is closest to the sun

It is called perihelion and it occurs on July 3rd
It is called aphelion and it occurs on July 3rd
It is called perihelion and it occurs on January 3rd
None of these

Q.20.

The planet with the most eccentric orbit is

Venus
Mars
Earth
Mercury

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