18 Questions
What is the approximate height above the earth's surface at which polar satellites revolve?
approximately 800 km
What is the formula to calculate the orbital velocity of a satellite?
𝑉0 = √𝑔𝑅
What is the relationship between escape velocity and orbital velocity?
Escape velocity is √2 times the orbital velocity.
What is the time period of a satellite that is near the earth's surface?
approximately 84.6 minutes
What is the purpose of communication satellites like geostationary satellites?
To enable live telecasts of events such as cricket world cup matches and other programmes.
What are the names of the launching vehicles used to launch satellites into space?
PSLV & GSLV
What does a tangent drawn at any point of a magnetic line of force represent?
The direction of magnetic field at that point.
What is the unit of magnetic flux?
Weber
What is the function of the Earth's magnetic field in relation to charged particles from space?
It diverts them towards the poles, saving living beings from harm.
What is a magnetic storm, and what is its possible cause?
A local disturbance in the Earth's magnetic field, possibly caused by charged particles from the sun.
What is the purpose of a moving coil galvanometer, and how does it work?
It detects the presence and direction of current in a circuit, using a moving coil.
How can a galvanometer be converted into an ammeter?
By connecting a low resistance in parallel.
What are physical quantities that do not depend on other physical quantities called?
Fundamental quantities
What is the unit of a physical quantity?
Reference standard used to measure it
What are the units defined for fundamental quantities called?
Fundamental or base units
What are the units defined for derived quantities called?
Derived units
What is an example of a fundamental quantity?
Mass, length, time, temperature, current, and luminous intensity
What is an example of a derived quantity?
Speed, acceleration, and force
Test your knowledge of general awareness and science with this quiz covering a wide range of topics from physics to geography and more. Prepare for your competitive exams with this challenging quiz.
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