Artificial Satellite

Q. What is the principle on which a rocket works?

1. Newton's third law
2. Conservation of mass
3. Archimedes principle
4. Conservation of energy

Q. The time period of satellites in geostationary orbit is_____.

1. 12 hours
2. 24 hours
3. 6 hours
4. 48 hours

Q. Critical velocity of the satellite is maximum in ______.

1. HEO
2. MEO
3. LEO
4. Polar orbit

Q. A earth orbit lies at a height which is greater than 35870 Km from the Earth's surface.

1. high
2. low
3. medium

Q. The propulsion of a rocket is based on the principle of conservation of

1. Rate of flow of gases
2. linear momentum
3. angular momentum
4. mass

Q. was the first artificial satellite sent to the space.

1. Aryabhatta
2. Sputnik
3. GSAT

Q. International space station revolves in high earth orbits.

1. True
2. False

Q. Which of the following is a celestial body that revolves around a planet?

1. Satellite
2. Star
3. Comet
4. Asteroid

Q. Earth's artificial satellites are much ______ than it's natural satellite.

1. larger
2. more visible in the sky
3. closer
4. farther

Q.

Statement 1: Moon is a natural satellite of Earth.

Statement 2: Man-made satellites launched from Earth to orbit around it, are known as artificial satellites. But, moon is a naturally occuring celestial body, which revolves around Earth.

1. Statement 1 is true but statement 2 is false.

2. Both the statements are true and statement 2 is the correct explanation of statement 1.

3. Both the statements are true and statement 2 is not the correct explanation of statement 1.

4. Statement 1 is false but statement 2 is true.

Q.

Two satellites revolve around the Earth in circular orbits of radii 1000km and
300 km respectively. What will be the ratio of their time periods?

Q. What is the minimum velocity needed for a spaceship to escape the Earth's gravitational force?

1. 11.2 km/s
2. 22.4 km/s
3. 5.6 km/s
4. 9.8 km/s

Q. Which was India's first artificial satellite launched into space?

1. Sputnik
2. Aryabhatta
3. EDUSAT
4. Bhaskara

Q. A string of length $1.5m$ is tied to a stone of mass of $0.2kg$ and is made to revolve at a speed of $1.2m{s}^{-1}$. What is the centripetal force experienced by the stone?

1. $0.173N$
2. $0.192N$
3. $0.160N$
4. $0.123N$

Q. Remote sensing can be done with the help of:

1. artificial satellites
2. meteorites
3. asteroids
4. comets

Q. There are earth orbits which are named on the basis of the height from the Earth's surface.

1. two
2. three
3. four

Q. Scientists predict weather and climate with the help of ___.

1. asteroids
2. artificial satellites
3. meteors
4. leonid showers

Q. Artificial satellites cannot be used for which of the following?

1. Remote sensing
2. Weather forecasting
3. Radio and TV broadcasting
4. Balancing the earth's gravity