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  • CDS Exam GENERAL KNOWLEDGE Study Material

Digitization help student to explore and study their academic courses online, as this gives them flexibility and scheduling their learning at their convenience. Kidsfront has prepared unique course material of GENERAL KNOWLEDGE General Physics for CDS Exam student. This free online GENERAL KNOWLEDGE study material for CDS Exam will help students in learning and doing practice on General Physics topic of CDS Exam GENERAL KNOWLEDGE. The study material on General Physics, help CDS Exam GENERAL KNOWLEDGE students to learn every aspect of General Physics and prepare themselves for exams by doing online test exercise for General Physics, as their study progresses in class. Kidsfront provide unique pattern of learning GENERAL KNOWLEDGE with free online comprehensive study material and loads of CDS Exam GENERAL KNOWLEDGE General Physics exercise prepared by the highly professionals team. Students can understand General Physics concept easily and consolidate their learning by doing practice test on General Physics regularly till they excel in GENERAL KNOWLEDGE General Physics.


General Physics
Q.Which instrument is used for the measurement of angular distances between two objects?

a) Sexant
b) Telstar
c) Spherometer
d) Refractometer



Answer
Solution
Correct Answer Is : Sexant
Solution Is : (A)Telstar instrument is used for the measurement of angular distances between two objects.
The Outer part of a Railway track near the bend or a curve is generally raised

a) To prevent the fast wear and tear of the railway track.
b) To produce the necessary centripetal force
c) To produce the necessary gravitational force
d) To enhance the speed of train



Answer
Solution
Correct Answer Is : To produce the necessary centripetal force
Solution Is : (B) The Outer part of a Railway track near the bend or a curve is generally raised to produce the necessary centripetal force.
Q.What are Sunspots?

a) These are great flames of gases which shoot out of the sun
b) These are cooler areas which move about on the sun`s surface and show up as dark spots.
c) These are areas of the Sun where the heat is most intense which shown up as dark spots
d) These are areas of the Sun where nuclear fission takes place.



Answer
Solution
Correct Answer Is : These are cooler areas which move about on the sun`s surface and show up as dark spots.
Solution Is : (B) Sunspots are cooler areas which move about on the sun`s surface and show up as dark spots.
The number of images of an object formed by two mirrors inclined at an angle of 60° is

a) 6
b) 5
c) 4
d) 7



Answer
Solution
Correct Answer Is : 5
Solution Is : (B) The number of images of an object formed by two mirrors inclined at an angle of 60° is 5
What is the technology used in a compact disc?

a) Electrical
b) Laser
c) Electro magnetic
d) Aeronautical



Answer
Solution
Correct Answer Is : Laser
Solution Is : Laser technology is used in compact discs to store and retrieve data .
A nuclear reaction must be balanced in terms of

a) Mass and volume
b) Energy and weight
c) Number of electrons
d) Mass and energy



Answer
Solution
Correct Answer Is : Mass and energy
Solution Is : A nuclear reaction must be balanced in term of mass energy. The mass number and total energy before the reaction must equal the total energy after the reaction
A watch spring when wound up acquires

a) Mechanical energy
b) Kinetic energy
c) Potential energy
d) Light energy



Answer
Solution
Correct Answer Is : Potential energy
Solution Is : A watch spring when wound up acquires potential energy
When water freezes its density

a) Decreases
b) Increases
c) Become zero
d) Remains constant



Answer
Solution
Correct Answer Is : Decreases
Solution Is : Water at ordinary temperatures contract and increases in density as it cooled like most substance. But at about 4?C, it reaches a maximum density and then decreases in density as it approaches the freezing point.
Which one of the following is a non-dimensional quantity ?

a) Strain
b) Co-efficient of viscosity
c) Gas constant
d) Plank`s constant



Answer
Solution
Correct Answer Is : Strain
Solution Is : Strain is a non-dimensional quantity.
The density of water is greater than the density of kerosene. If the two are mixed

a) Kerosene dissolves in water
b) They mix uniformly
c) Water floats on kerosene
d) Kerosene floats on water



Answer
Solution
Correct Answer Is : Kerosene floats on water
Solution Is : The density of kerosene oil is less than density of water. Hence it floats on top of the water layer
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