11th Class Physics MCQS Waves Online Test 4

if-a-stretch-string-vibrate-in-three-loops-then-relation-between-its-length-and-wavelength-of-stationary-wave-is-3-a_-_5-c-28-l-3-d-0-crac-7-b-3-5-clambda-7-d-7-b-2-7-d-5-c-29,if-a-string-is-fixed-at-both-ends-vibrates-in-27-n-27-loops-2-c-then-wavelength-in-term-of-length-27-i-27-of-string-is-given-by_-_3-cimg-src-3-d-22-2-fimages-2-fmcqs-2-f-11th-2-fphy-2-f-11th-phy-ch-08-045-02-png-22-3-e,if-a-string-is-fixed-at-both-ends-vibrates-in-e-2-80-98-n-e-2-80-99-loops-2-c-then-wavelength-in-term-of-length-e-2-80-98-l-e-2-80-99-of-string-is-given-by-3-a_-_5-c-28-0-crac-7-b-2-l-7-d-7-bn-7-d-5-c-29,if-a-string-vibrates-in-four-segments-at-a-frequency-of-120-hz-2-c-its-fundamental-frequency-will-be-3-a_-_30-hz,if-an-aeroplane-approaches-towards-the-radar-2-c-then-the-wavelength-of-the-wave-reflected-from-aeroplane-would-be-3-a_-_shorter,if-organ-pipe-is-open-at-both-ends-2-c-frequency-of-fundamental-harmonic-is-given-by-3-a_-_5-c-28-v-5-cover-2-5-c-2-cl-5-c-29,if-the-organ-pipe-is-closed-at-one-end-2-c-the-frequency-of-fundamental-harmonic-is-3-a_-_3-cimg-src-3-d-22-2-fimages-2-fmcqs-2-f-11th-2-fphy-2-f-11th-phy-ch-08-049-02-png-22-3-e,if-the-organ-pipe-is-open-at-one-end-and-closed-at-the-other-2-c-then-its-frequency-of-fundamental-harmonic-is-3-a_-_3-cimg-src-3-d-22-2-fimages-2-fmcqs-2-f-11th-2-fphy-2-f-11th-phy-ch-08-049-02-png-22-3-e,if-the-organ-pipe-is-open-at-one-end-and-closed-at-the-other-2-c-then-its-frequency-of-fundamental-harmonic-is-3-a_-_5-c-28-f-1-3-d-0-crac-7-bv-7-d-7-b-4-l-7-d-5-c-29,if-the-pressure-of-a-gas-is-doubled-2-c-then-speed-of-sound-is-3-a_-_not-affected,if-the-wave-motion-is-0-01-sec-and-wave-speed-is-100-ms-3-csup-3-e-1-3-c-2-fsup-3-e-then-frequency-of-wave-is-3-a_-_100-hz,if-the-wavelength-of-a-wave-is-1500-m-and-moves-with-a-velocity-of-3-c-3-97-10-3-csup-3-e-8-3-c-2-fsup-3-e-ms-3-csup-3-e-1-3-c-2-fsup-3-e-its-frequency-will-be-3-a_-_2-c-3-97-10-3-csup-3-e-5-3-c-2-fsup-3-e-hz,in-a-stretched-string-2-c-if-speed-of-the-wave-is-doubled-2-c-the-tension-in-string-will-increase-by-3-a_-_4,in-order-to-produce-beats-2-c-the-two-sound-waves-should-have-3-a_-_slightly-different-frequencies,in-sonar-2-c-we-use-3-a_-_ultrasound-waves,in-sonar-we-use-3-a_-_ultrasound-waves,in-standing-waves-if-ce-bb-26-nbsp-3-b-3-d-l-28-length-of-string-29the-loops-will-be-3-a_-_4,in-stationary-waves-2-c-the-velocity-of-particle-at-the-node-is-3-a_-_zero,in-stationary-waves-the-points-which-always-remain-at-rest-are-3-a_-_nodes,in-vibrating-cord-28-or-string-29-2-c-the-points-where-the-amplitude-is-minimum-28-i-e-zero-29-are-called-3-a_-_nodes,when-two-identical-travelling-waves-are-superimposed-2-c-velocity-of-resultant-wave-3-a_-_remain-same