MEDIUM

Earn 100

India launched its first satellite, Aryabhata, on $19$ April $1975$ . Given below is the Indian satellite. Find out more about them and complete the following table.

SATELLITE LAUNCH DATE PURPOSE

INSAT- $4$ A

Important Questions on Gravitation

MEDIUM

Physics>Mechanics>Gravitation>Kepler's Laws

Kepler's third law states that the square of the period of revolution

(T)

of a planet around the sun is proportional to the third power of the average distance

r

between sun and planet i.e.,

T^{2} = K r^{3}

, here

K

is constant. If the masses of sun and planet are

M

and

m

respectively then as per Newton's law of gravitation force of attraction between them is

F = \frac{G M m}{r^{2}}

, here

G

is gravitational constant. The relation between

G

and

K

is described as:

MEDIUM

Physics>Mechanics>Gravitation>Kepler's Laws

An artificial satellite of mass

m

is moving along an elliptical path around the earth. The areal velocity of the satellite is proportional to

MEDIUM

Physics>Mechanics>Gravitation>Kepler's Laws

Write the general characteristics of Jovian planets.

MEDIUM

Physics>Mechanics>Gravitation>Kepler's Laws

The figure shows an elliptical path

A B C D

of a planet around the sun

S

such that the area of triangle

C S A

\frac{1}{4}

the area of the ellipse. (see figure) with

D B

as the major axis, and

C A

as the minor axis. If

t_{1}

is the time taken for the planet to go over path

A B C

and

t_{2}

for path taken over

C D A

then:

EASY

Physics>Mechanics>Gravitation>Kepler's Laws

Write any two characteristics of Jovian Planets.

EASY

Physics>Mechanics>Gravitation>Kepler's Laws

The earth takes $1$ year to make a complete revolution around the sun whereas Pluto takes nearly $248$ of our earth years to orbit the sun. What is the main reason for this?

EASY

Physics>Mechanics>Gravitation>Kepler's Laws

Stars twinkle but, we do not see the twinkling of planets. Give reason.

MEDIUM

Physics>Mechanics>Gravitation>Kepler's Laws

What portion of the Moon do we see when it is between the Sun and the Earth?

EASY

Physics>Mechanics>Gravitation>Kepler's Laws

Where does the Moon get its light from?

EASY

Physics>Mechanics>Gravitation>Kepler's Laws

What do you know about man-made satellites?

EASY

Physics>Mechanics>Gravitation>Kepler's Laws

The moon has no _____ of its own.

EASY

Physics>Mechanics>Gravitation>Kepler's Laws

There is no water and air on the moon.

MEDIUM

Physics>Mechanics>Gravitation>Kepler's Laws

How many days does the moon take to go around the Earth?

EASY

Physics>Mechanics>Gravitation>Kepler's Laws

What do you know about the moon?

EASY

Physics>Mechanics>Gravitation>Kepler's Laws

The New Moon shines brightly in the sky.

EASY

Physics>Mechanics>Gravitation>Kepler's Laws

On which day do we see the Full Moon after the New Moon?

MEDIUM

Physics>Mechanics>Gravitation>Kepler's Laws

Why do you think there is no life on the moon?

EASY

Physics>Mechanics>Gravitation>Kepler's Laws

The Moon takes approximately

4

weeks to go around the Earth.

MEDIUM

Physics>Mechanics>Gravitation>Kepler's Laws

When can we see the full moon?

EASY

Physics>Mechanics>Gravitation>Kepler's Laws

The stars go away from the sky during the day.

India launched its first satellite, Aryabhata, on 19 April 1975. Given below is the Indian satellite. Find out more about them and complete the following table. SATELLITE LAUNCH DATE PURPOSE INSAT-4A

Important Questions on Gravitation

Learn and Prepare for any exam you want !

India launched its first satellite, Aryabhata, on $19$ April $1975$ . Given below is the Indian satellite. Find out more about them and complete the following table.

SATELLITE LAUNCH DATE PURPOSE

INSAT- $4$ A