Physics
Assertion (A) : To make a shrill sound in a flute, holes are opened.
Reason (R) : The holes are opened to increase the length of the vibrating air column.
- Both A and R are true and R is the correct explanation of A
- Both A and R are true and R is not the correct explanation of A
- Assertion is true but reason is false
- Assertion is false but reason is true
Sound
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Answer
Assertion is true but reason is false
Explanation
Assertion (A) is true because to increase the pitch (or make the sound shrill) in a flute, the holes are opened so as to reduce the length of the vibrating air column.
Reason (R) is false because in a flute, holes are opened to reduce the length of the vibrating air column and vice versa.
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Related Questions
By reducing the amplitude of the sound wave, its :
- pitch decreases
- loudness decreases
- loudness increases
- pitch increases
Pitch of a note depends on :
- amplitude
- loudness
- frequency
- waveform
Assertion (A) : Loudness and quality of sound are independent of each other.
Reason (R) : Loudness depends on amplitude while quality of sound depends on the waveform of sound.
- Both A and R are true and R is the correct explanation of A
- Both A and R are true and R is not the correct explanation of A
- Assertion is true but reason is false
- Assertion is false but reason is true
Fill in the blanks:
(a) The time period of a wave is 2 s. Its frequency is …………… .
(b) The pitch of a stringed instrument is increased by …………… tension in string.
(c) The pitch of a flute is decreased by …………… length of air column.
(d) Smaller the membrane, …………… is the pitch.
(e) If a drum is beaten hard, its loudness …………… .
(f) A tuning fork produces sound of …………… frequency.