Tag: uses of good and poor conductors in daily life

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Questions Related to uses of good and poor conductors in daily life

Multiple choice evs - i transfer of heat clothes - our necessity applications of insulation uses of good and poor conductors in daily life voyages and discoveries applications of heat conduction

A shining metallic ball with a small black spot on its surface is heated to very high temperature and then quickly taken to a dark room. Then.

  1. Both appear equally bright

  2. The spot appears brighter than the ball

  3. The spot appears darker than the ball

  4. Both are invisible in the dark room
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

According to Kirchhoff's law of radiation, good absorbers are good emitters. A black spot is a better absorber than the shiny surface, so it will emit more radiation and appear brighter when the object cools in a dark room.

Multiple choice evs - i clothes - our necessity applications of insulation uses of good and poor conductors in daily life voyages and discoveries

Sculpture and art tell us that in ancient times, people in the Indian subcontinent wore unstitched clothes.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Historical evidence from sculptures and ancient texts indicates that people in the Indian subcontinent primarily wore unstitched garments like the dhoti and shawl.

Multiple choice evs - i clothes - our necessity applications of insulation uses of good and poor conductors in daily life voyages and discoveries

___________ rice for the Tamil harvest festival is an example of traditions in food.

  1. Pongal

  2. Idli

  3. Dosa

  4. Sevian
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pongal is a rice dish in Sri Lanka, Tamil Nadu, Andhra Pradesh and Telangana. It is offered to the Sun God on the seond day of Pongal- a four-days-long harvest festival celebrated in Tamil Nadu. It is a traditional occasion for giving thanks to nature, for celebrating the life cycles that give us grain.