11th Class Physics MCQS Waves Online Test 3

according-to-newton-2-csound-travels-in-air-under-conditions-of-3-a_-_isothermal,according-to-newton-27-s-formula-2-c-the-speed-of-sound-in-air-at-stp-is-3-a_-_280-ms-3-csup-3-e-1-3-c-2-fsup-3-e,beats-are-produced-due-to-3-a_-_superposition-of-sound-waves,beats-can-be-heard-when-difference-of-frequency-is-not-more-than-3-a_-_10-hz,beats-cannot-be-recognized-if-difference-of-frequencies-of-two-sound-is-3-a_-_more-than-10-hz,beats-detectable-easily-upto-frequency-difference-between-two-sound-is-3-a_-_10-hz,constructive-interference-of-two-coherent-beams-is-obtained-if-path-difference-is-3-a_-_5-c-28-0-crac-7-bn-5-clambda-7-d-7-b-2-7-d-5-c-29,crests-and-trough-are-formed-in-3-a_-_transverse-waves,detection-and-location-of-submarines-can-be-detected-by-3-a_-_doppler-effect,diffraction-is-a-special-type-of-3-a_-_interference,distance-between-two-adjacent-crests-and-trough-is-3-a_-_5-c-28-5-clambda-5-cover-2-5-c-29,doppler-e-2-80-99-s-effect-applies-to-3-a_-_both-sound-and-light-waves,doppler-e-2-80-99-s-effect-can-be-used-to-calculate-the-3-a_-_speed-of-galaxies,half-wavelength-corresponds-to-3-a_-_180-c-2-b-0,half-wavelength-corresponds-to-3-a_-_5-c-28180-5-e-7-bo-7-d-5-c-29,if-20-waves-pass-through-a-madium-in-1-second-with-a-speed-of-20-ms-the-wavelength-is-3-a_-_1-m,if-20-waves-passes-through-the-medium-in-2-sec-of-10-ms-3-csup-3-e-1-3-c-2-fsup-3-e-then-the-wavelength-is-3-a_-_1-m,if-30-waves-per-second-pass-through-a-medium-at-a-speed-30-ms-3-csup-3-e-1-3-c-2-fsup-3-e-2-c-then-the-wavelength-is-3-a_-_1-m,if-332-waves-pass-through-a-medium-in-1-second-with-speed-of-332-5-c-28-ms-5-e-7-b-1-7-d-5-c-29-26-nbsp-3-bthen-wavelength-will-be-3-a_-_1-m,if-a-stationary-wave-is-established-along-a-stretched-string-of-length-22-5-c-28-l-5-c-29-22-and-it-vibrate-in-one-loop-2-c-the-wave-length-is-equal-to-3-a_-_5-c-282-5-c-2-cl-5-c-29,when-the-amplitude-of-a-wave-becomes-double-2-c-its-energy-becomes-3-a_-_four-times