MCQ - CBSE Class 9 Science How does a stretched string on being set into vibration, produce the audible sound? 10/04/2023 Ajit kumar 67 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Mention one practical use of echoes. 10/04/2023 Ajit kumar 77 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Give one example each of natural vibration, forced vibration and resonance. 10/04/2023 Ajit kumar 67 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Two friends were playing on identical guitars whose strings were adjusted to give notes of the same pitch. Will the quality of the two notes be the same ? Give a reason for your answer. 10/04/2023 Ajit kumar 64 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Name the subjective property of sound related to its frequency and of light related to its wavelength. 10/04/2023 Ajit kumar 63 Views 0 Comments Read more
MCQ - CBSE Class 9 Science How do the frequency and amplitudes affect a musical sound ? 10/04/2023 Ajit kumar 95 Views 0 Comments Read more
MCQ - CBSE Class 9 Science If the amplitude of a wave is doubled, what will be the effect on its loudness? 10/04/2023 Ajit kumar 68 Views 0 Comments Read more
MCQ - CBSE Class 9 Science State any two characteristics of a wave motion. 10/04/2023 Ajit kumar 87 Views 0 Comments Read more
MCQ - CBSE Class 9 Science The stem of a tuning fork is pressed against a table top. Answer the following questions : (i) Would the above action produce any audible sound ? (ii) Does the above action cause the table to set into vibrations? (iii) If the answer above is yes, what type of vibrations are they? (iv) Under what conditions does the above action lead to resonance ? 10/04/2023 Ajit kumar 83 Views 0 Comments Read more
MCQ - CBSE Class 9 Science How do you account for the fact that two strings can be used to give notes of the same pitch and loudness but of different quality? 10/04/2023 Ajit kumar 60 Views 0 Comments Read more