1. CONCISE Physics - Middle School - 8
2. Physical Quantities and Measurement
3. Force and Pressure
5. Light Energy
6. Heat Transfer
1. Objective Questions
2. Short/Long Answer Questions
Q1) How does sound travel in air?
Q2) What is longitudinal wave?
Q3) Explain the mechanism of formation of a longitudinal wave when source vibrates in air.
Q4) Define the following terms:
(c) Time period
Q5) Obtain relationship between the time period and frequency.
Q6) Name three characteristics of a musical sound.
Q7) Name the quantity from below which determines the loudness of a sound wave:
(b) Frequency, and
Q8) How is loudness related to the amplitude of wave?
Q9)If the amplitude of a wave is doubled, what will be the effect on its loudness?
Q10) How does the wave pattern of a loud note differ from a soft note? Draw a diagram.
Q11) Name the unit in which the loudness of sound is expressed?
Q12) Why is the loudness of sound heard by a plucked wire increased when mounted on a soundboard?
Q13) State three factors on which loudness of sound heard by a listener depends.
Q14) What determines the pitch of a sound?
Q15) Name the characteristics of sound related to its frequency.
Q16) Name and define the characteristic which enables one to distinguish two sounds of same loudness, but of different frequencies, given by the same instrument.
Q17) Draw a diagram to show the wave pattern of high pitch note and a low pitch note, but of the same loudness.
Q18) How is it possible to detect the filling of a bucket under a water tap by hearing the sound standing at a distance?
Q19) The frequencies of notes given by flute, guitar and trumpet are respectively 400 Hz, 200 Hz and 500 Hz. Which one of these has the highest pitch?
Q20) Figure shows two jars A and B containing water up to different heights. Which will produce sound of higher pitch when air is blown on them?
Q21) Two identical guitars are played by two persons to give notes of the same pitch. Will they differ in quality? Give reason for your answer.
Q22) Two musical notes of the same pitch and same loudness are played on two different instruments. Their wave patterns are as shown in figure.
How do they differ in (a) loudness (b) pitch and (c) quality
Q23) Which characteristics of sound makes it possible to recognize a person by his voice without seeing him?
Q24) State the factors that determine
(a) The pitch of a note
(b) The loudness of the sound heard
(c) the quality of the note.
Q25) Name the characteristics of the sound affected due to a change in its
(a) amplitude (b) waveform (c) frequency
Q26) Figure shows four waves A, B, C, and D
Name the wave which shows (a) a note from a musical instrument (b) a soft note (c) a shrill note
Q27) How is the pitch of sound in a guitar changed if (a) thin wire is used, (b) wire under less tension is used?
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CONCISE Physics - Middle School - 8
Physical Quantities and Measurement
Force and Pressure
Short/Long Answer Questions
Race To Space
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