ECAT Physics MCQS Physical Optics Online Test 3

soap-film-in-sunlight-appears-coloured-due-to-3-a_-_interference-of-light,sodium-chloride-in-a-flame-gives-3-a_-_yellow-light,sound-waves-cannot-be-3-a_-_polarized,the-appearance-of-colors-in-thin-films-is-due-to-3-a_-_interference,the-blue-colour-of-sky-is-due-to-3-a_-_scattering,the-centre-of-newton-27-s-rings-is-dark-due-to-3-a_-_destructive-interference,the-centre-of-newton-e-2-80-99-s-rings-is-dark-due-to-3-a_-_destructive-interference,the-condition-for-constructive-interference-in-case-of-diffraction-grating-is-3-a_-_d-sin-26-nbsp-3-b-ce-b-8-26-nbsp-3-b-3-d-n-ce-bb,the-distance-between-any-two-consecutive-dark-fringes-is-called-3-a_-_fringes-spacing,the-distance-between-two-adjacent-bright-or-dark-fringes-is-3-a_-_5-c-28-0-crac-7-b-5-clambda-l-7-d-7-bd-7-d-5-c-29,the-distance-between-two-adjacent-dark-fringes-is-given-as-3-a_-_5-c-28-5-c-delta-y-3-d-0-crac-7-b-5-clambda-d-7-d-7-bl-7-d-5-c-29,the-equation-for-michelson-e-2-80-99-s-interference-is-3-a_-_l-3-d-m-ce-bb-2-f-2,the-fringe-spacing-in-a-double-slit-experiment-can-be-increased-by-decreasing-3-a_-_distance-between-the-slits-and-the-screen,the-fringe-spacing-increases-if-we-use-3-a_-_red-light,the-grating-equation-can-be-written-as-3-a_-_d-sin-26-nbsp-3-b-ce-b-8-26-nbsp-3-b-3-d-n-ce-bb,the-light-from-the-sun-reaches-the-earth-with-3-a_-_circular-wave-fronts,the-locus-of-all-points-in-a-medium-having-the-same-phase-of-vibration-is-called-3-a_-_wave-front,the-path-difference-e-2-80-98-d-e-2-80-99-for-constructive-interference-should-be-3-a_-_d-3-d-m-ce-bb,the-phase-change-of-180-3-csup-3-eo-3-c-2-fsup-3-eis-equal-to-the-path-difference-of-3-a_-_ce-bb-2-f-2,the-phenomenon-of-interference-comes-about-because-waves-obey-3-a_-_principle-of-superposition,thin-film-shows-colours-due-to-3-a_-_interference,we-get-light-inside-a-room-in-a-day-time-due-to-3-a_-_diffraction,when-one-mirror-of-a-michelson-interferometer-is-moved-a-distance-of-0-5-mm-2-c-2000-fringes-are-erved-the-wavelength-of-light-used-is-3-a_-_5000-a-c-2-b-0,which-of-the-followings-cannot-produce-colours-with-white-light-3-f_-_polarization,x-ray-diffraction-has-been-very-useful-in-determining-the-structure-of-3-a_-_haemoglobin