Nettet6. feb. 2024 · Have a glance at the MCQ of Chapter 12 Science Class 9 and cross-check your answers during preparation. Multiple Choice Questions. Question 1. For hearing a distinct sound, the time interval between the original sound and the reflected one must be at least: (a) 1 s. (b) 0.1 s. (c) 2 s. (d) 0.2 s. Answer. NettetLocalization of Sound At low frequencies ( 4000 Hz), use relative intensity in both ears one ear is in sound shadow even with one ear, can tell front vs. back at high freq. Speakers: Inverse Eardrums Speakers vibrate and push on the air pushing out creates compression pulling back creates rarefaction Speaker must execute complex motion …
What do u mean by intensity of sound? EduRev Class 9 Question
Nettet8. apr. 2024 · The Intensity of the Sound Accordingly, the intensity is defined as the ratio of energy per unit time per unit area, and since the ratio of energy to time is the same as the power per unit area, the intensity is simply the power per unit area. Intensity = Energy (Time * Area) or Intensity = Power Area NettetThe intensity of sound is defined as the amount of energy passing through the unit area at that point. It is inversely proportional to the square of the distance between the point and the source. It is also directly … heal american idol
Difference between loudness and intensity? EduRev Class 9 …
NettetQuestion of Class 9-exercise-1 : The amplitude of a sound is doubled and the frequency is reduced to one fourth The intensity of sound at the same point will be . Login/Register. PW Centres PW Skills Ask Doubt. All Courses . IIT JEE. CLASS 11; CLASS 12; Dropper; NEET. CLASS 11; CLASS 12; Dropper; UPSC. Nettet16. mar. 2024 · Class 9 Class 9 Maths; Class 9 Science; Class 9 English; Class 10 Class 10 Maths; Class 10 Science; Class 10 Social Science; Class 10 ... Loudness, Intensity, Pitch and Quality of Sound Reflection of Sound Echo Reverberation of ... NettetA useful quantity for describing the loudness of sounds is called sound intensity. In general, the intensity of a wave is the power per unit area carried by the wave. Power is the rate at which energy is transferred by the wave. In equation form, intensity I is I = P … heal a minor cut