MCQ
The air layer of atmosphere whose temperature is less then the hot layer behave as optically :
- ✓Denser medium
- BRarer medium
- CInactive medium
- DEither denser or rarer medium
✓
Answer
Correct option: A.
Denser medium
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Binary fission describes the type of reproduction where the organism divides to form :
The organs which perform different functions but have the same basic structure are known as :
Which of the following is an artificial ecosystem?
The diagram given below shows the human excretory system.
Identify the function of part labelled as $x$
→Identify the function of part labelled as $x$
A student while observing an embryo of a gram seed listed various parts of the embryo as listed below:
Testa, Micropyle, Cotyledon, Tegmen, Plumule, Radicle. On examining the list the teacher commented that only three parts are correct. Select these three correct parts:
Testa, Micropyle, Cotyledon, Tegmen, Plumule, Radicle. On examining the list the teacher commented that only three parts are correct. Select these three correct parts:
Which of the following will undergo addition reactions?
Which of the following are cerebral reflexes?
- A person pulls away his hand on touching a hot object.
- A person spits out immediately when a fly enters his mouth while talking.
- A person walking bare foot lifts his foot at once on stepping on to a nail.
- A person's pupil contracts at once in the presence of bright light.
Generally, non-metals are not conductors of electricity. Which of the following is a good conductor of electricity?
An element $'A\ ’$ belongs to the third period and group $16$ of the Periodic Table. Find out the valency of $A$.
→The element which forms a basis oxide has the atomic number of: