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Physics Quiz 6

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Basic Physics Online Test

  • This is an online quiz to test your knowledge of Basic Physics.
  • This Online Test is useful for academic and competitive exams.
  • Multiple answer choices are given for each question in this test. You have to choose the best option.
  • After completing the test, you can see your result.
  • There are 10 questions in the test.
  • There is no negative marking for wrong answers.
  • There is no specified time to complete this test.
  • EduDose has provided this test in both English and Hindi medium.

The type of mirrors used in the headlamp of cars is:

A parabolic concave mirror is used in torches and car headlamps as reflectors. This type of mirror is capable of directing the light at a particular point as they have converging power. These mirrors provide clear visibility.

Which of the following substance is highly plastic?

Clay is a highly plastic substance. Clay particles are attracted to each other by weak electrostatic forces. Water conducts these forces. Thus, dry clay mixed with a fifth of its weight in water, becomes the plastic material clay artists use.

A device which uses sound waves for detection and ranging is called:

Sonar is a device that uses sound waves to detect and range objects on or under the surface of the water.

When a bar magnet is cut into two equal halves (perpendicular to its length), the pole strength of each piece:

When a bar magnet is cut perpendicular to its length then the pole strength of each piece remains the same (but the magnetic moment is halved). If a magnet is cut parallel to its length then the pole strength of the pieces becomes half.

The function of ball bearings in a wheel is:

The function of ball bearings in a wheel is to convert kinetic friction into rolling friction because rolling friction is much lesser than sliding friction. Ball bearings reduce friction and facilitate easy movement.

The metal used for making aircraft and rockets is:

Aluminium and its alloys are used for making aircraft and rockets, due to their high strength at relatively low density.

Pycnometer is an instrument used to measure the:

Pycnometers are used for measuring and comparing densities or specific gravities of liquids and solids, including soil.

Asteroids revolve around the Sun between which of the following two planets?

Asteroids are rocky objects revolving around the sun that are too small to be called planets. The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Mars and Jupiter.

Among the following materials sound travels fastest in:

Among the given materials sound travels fastest in steel. Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. Sound cannot travel in a vacuum as there is no medium.

The centre of gravity of a sprinter during the race lies:

The centre of gravity of a sprinter during the race lies ahead of his feet. It is an imaginary point in a body of matter where the total weight of the body may be thought to be concentrated. Running with a lean allows gravity to pull the runner forward.

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