List of top Physics Questions asked in IIITH UGEE

Air flow in an air cooler follows which process?

Earth's magnetic field protects life by:

For an air cooler to work at maximum efficiency:

Water takes 10 minutes to boil on Earth. If the boiling point of water is lower on Mars, it would take textunderscoretextunderscoretextunderscoretextunderscoretextunderscoretextunderscore than 10 minutes.

If you shrink to one billionth of your size, how would the world appear?

For a solar eclipse to last longer, which condition must be satisfied?

To increase cooling efficiency of an air cooler, which setup is best?

As the thickness of a soap bubble increases under sunlight, which colour appears later?

Aryan and Mira are playing with soap bubbles in sunlight. Aryan notices that the bubble appears purple, which is unusual. A scientist explains the phenomenon and gives the following statements:
I. The colour is due to interference of light in a thin film.
II. As the bubble thickness increases, the reflected colour shifts towards higher wavelength.
III. Purple colour appears because shorter wavelengths undergo constructive interference first.
IV. The colour is due to absorption of light by soap.
Which of the above statements correctly explain the observation?

In summer, an air cooler is used in a room. To achieve maximum cooling efficiency, which of the following setups is best?

Rice takes about 10 minutes to boil on Earth in open conditions. If the same experiment is performed on Mars, what will happen?

When an air cooler is used in a closed room, air is pulled through the cooler pads. Which thermodynamic process does the air approximately undergo?

An air cooler will work most efficiently under which condition?

Air blown out by an air cooler in a closed room approximately undergoes which process?

In summer, when an air cooler is used, the room temperature decreases. What is the primary thermodynamic process responsible for cooling?

For maximum cooling efficiency, an air cooler should be placed:

Two children observe soap bubbles in sunlight. Initially the bubble appears bluish, but after some time it turns yellowish.
Which of the following statements are correct?
I. The colour shifts towards higher wavelength.
II. Blue/violet colours disappear earlier than red.
III. For sufficiently thick bubbles, the bubble appears white.