MCQ
A sharp sound becomes a musical note in an auditorium then, it is called:
- AEcho
- ✓Echelon effect
- CReverberation
- DShrillness
✓
Answer
Correct option: B.
Echelon effect
If there is regular structure similar to a flight of stairs or asset of railways in the hall, the sound produced in front of such a structure may produce a musical note due to regular successive echoes of sound reaching the observer. Such an effect is called echelon effect. If the frequency of this note is within the audible range, the listeners will hear only this note prominently.
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
Humidity is amount of:
Which one of the following is not a property of solution:
Gravitational force between two objects is $10\ N$. If masses of both objects are doubled without changing distance between them, then the gravitational force would become:
→A coconut fruit hanging high in a palm tree has $.........$ owing to its location:
→A book of mass $20\ g$ is placed on a table.Find the thrust exerted by the book on the table. (Take acceleration due to gravity as $10\ ms−2).$
→What would you conclude about the variation in velocity of a cyclist from the given graph?
Which one of the following is not a bacterial disease?
The use of ultrasound waves to investigate the action of the heart is called:
When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment:
The instrument which measures wind velocity is: