Advertisements
Advertisements
प्रश्न
State with reasons whether the sentence is true or false.
If a spacecraft has to be sent away from the influence of earth’s gravitational field, its velocity must be less than the escape velocity.
उत्तर
The statement is false. This is because the minimum velocity with which the spacecraft must be projected so that it escapes the Earth's gravitational pull is known as escape velocity. So, the initial velocity of the spacecraft must be greater than or equal to escape velocity of Earth.
APPEARS IN
संबंधित प्रश्न
Fill in the blank and explain the statement with reasoning:
The initial velocity (during launching) of the Managalyaan, must be greater than ______ of the earth.
State with reasons whether the sentence is true or false .
The escape velocity on the moon is less than that on the earth.
State with reasons whether the sentence is true or false .
A satellite needs a specific velocity to revolve in a specific orbit.
State with reasons whether the sentence is true or false .
If the height of the orbit of a satellite increases, its velocity must also increase.
Why it is beneficial to use satellite launch vehicles made of more than one stage?
In which direction do these things fall?
Rocks that come loose from a hillside.
In which direction do these things fall?
Rain falling from the sky.
Explain : Escape velocity on the moon is less than escape velocity on the earth.
Write the names of India's satellite series and launchers?
Which of the following is the working principle of Rockets?
PSLV and GSLV are India’s popular satellites.
Name the principle which is used in rocket propulsion.
Explain the launching of a satellite in a particular orbit.
The functioning of the satellite launch vehicle is based on ______.
What is meant by a satellite launch vehicle?
