Home
Class 12
PHYSICS
Statement-1: The change in pitch of soun...

Statement-1: The change in pitch of sound depends on speed of source and detector relative to each other and not on the distance between them.
Statement-2: The pitch of sound depends on intensity of sound which is independent of distance between source and detector.

A

Statement-1 is true, statement-2 is true, statement-2 is a correct explanation for statement-1

B

Statement-1 is true, statement-2 is true, statement-2 is not a correct explanation for statement-1

C

statement-1 is true, statement-2 is false

D

statement-1 is false, statement-2 is true

Text Solution

AI Generated Solution

The correct Answer is:
To analyze the statements provided in the question, we will evaluate each statement step by step. ### Step 1: Understanding Statement 1 **Statement 1**: The change in pitch of sound depends on the speed of the source and detector relative to each other and not on the distance between them. - **Analysis**: The pitch of sound is directly related to its frequency. According to the Doppler effect, the frequency (and thus the pitch) of a sound changes when there is relative motion between the source of sound and the observer (detector). The distance between the source and the observer does not affect the pitch; it only affects the intensity (loudness) of the sound. Therefore, this statement is **correct**. ### Step 2: Understanding Statement 2 **Statement 2**: The pitch of sound depends on the intensity of sound which is independent of distance between source and detector. - **Analysis**: This statement is misleading. The pitch of sound is determined by its frequency, not its intensity. Intensity refers to the power per unit area carried by a wave and is related to how loud the sound is, not its pitch. While intensity can be affected by distance (as sound waves spread out), the pitch remains constant unless there is relative motion affecting the frequency. Therefore, this statement is **incorrect**. ### Conclusion - **Statement 1** is true. - **Statement 2** is false. Thus, the final conclusion is that Statement 1 is correct and Statement 2 is incorrect.
Promotional Banner

Topper's Solved these Questions

  • WAVES

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-F) (Match the column)|2 Videos

  • WAVES

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-G) (Integer Type)|4 Videos

  • WAVES

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-D)|9 Videos

  • WAVE OPTICS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-J (Aakash Challengers question))|1 Videos

  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - D)|13 Videos

Similar Questions

Explore conceptually related problems

State the factors on which the pitch of a sound depends.

A : In Doppler's effect the value of apparent frequency depends on the relative motion between source and observer . R : The change in frequency in Doppler effect is independent from the distance between source and observer .

In an organ pipe the distance between the adjacent node is 4 cm . Find the frequency of source if speed of sound in air is 336 m//s .

Pitch .............. (does not/does) depend on the distance between the listener and the source.

the minimum distance between the reflecting surface and source for listening the eco of sound is ( take speed of sound 340 m/s )

Why will an echo not be heard when the distance between the source of sound and the reflecting surface is 10 m ?

Statement-1: Doppler formula is not applicable, when detector is moving away from source with speed greater than that of sound. Statement-2: There is always a decrease in pitch of sound if detector moves towards source.

When both source and observer approach each other with a speed a equal to the half the speed of sound, then determine the percentage change in frequency of sound as detected by the listener.

Statement(A): The reflection of sound from an extended object is echo Statement(B): The super position of waves of same frequency is beats Statement(C): The apparent change in frequency of source of sound due to relative motion between source and observer is Doppler effect Statement(D): The super position of wave of slightly differ in frequency is stationary waves

When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remain the same. Do you hear echo sound on a hotter day ?