10th Class Physics MCQS Geometrical Optics Online Test 1

3-cp-3-e-3-cspan-class-3-d-22-math-tex-22-3-e-5-c-5-c-28-5-c-5-cfrac-7-b-1-7-d-7-bf-7-d-5-c-5-c-29-3-c-2-fspan-3-e-is-equal-to-3-c-2-fp-3-e_-_3-cp-3-e-3-cspan-class-3-d-22-math-tex-22-3-e-5-c-5-c-28-5-c-5-cfrac-7-b-1-7-d-7-bp-7-d-2-b-5-c-5-cfrac-7-b-1-7-d-7-bq-7-d-5-c-5-c-29-3-c-2-fspan-3-e-3-c-2-fp-3-e,3-cp-3-e-focal-length-of-concave-lens-3-c-2-fp-3-e_-_3-cp-3-eis-negative-3-c-2-fp-3-e,3-cp-3-e-how-many-basic-operations-of-digital-electronics-are-3-f-3-c-2-fp-3-e_-_3-cp-3-e-3-3-c-2-fp-3-e,3-cp-3-e-if-the-speed-of-a-wave-is-c-2-a-0-3-cspan-class-3-d-22-math-tex-22-3-e-5-c-5-c-28340-5-c-5-c-2-c-ms-5-e-7-b-1-7-d-5-c-5-c-29-3-c-2-fspan-3-e-and-wavelength-is-0-5-m-2-c-then-frequency-will-be-3-a-3-c-2-fp-3-e_-_3-cp-3-e-680-hz-3-c-2-fp-3-e,3-cp-3-e-if-we-touch-the-disc-of-a-charged-electroscope-with-a-body-and-the-leaves-gradually-collapse-2-c-then-the-body-would-be-3-c-2-fp-3-e_-_3-cp-3-e-not-a-good-conductor-3-c-2-fp-3-e,3-cp-3-e-in-an-astronomical-telescope-2-c-the-distance-between-objective-lens-and-eye-piece-is-3-a-3-c-2-fp-3-e_-_3-cp-3-eequal-to-f-3-csub-3-eo-3-c-2-fsub-3-e-2-b-f-3-csub-3-ee-3-c-2-fsub-3-e-3-c-2-fp-3-e,3-cp-3-e-in-terms-of-wavelength-3-cspan-class-3-d-22-math-tex-22-3-e-5-c-5-c-28-5-c-5-clambda-5-c-5-c-29-3-c-2-fspan-3-e-distance-between-two-neighboring-nodes-and-antinodes-is-3-c-2-fp-3-e_-_3-cp-3-e-3-cspan-class-3-d-22-math-tex-22-3-e-5-c-5-c-28-5-c-5-cfrac-7-b-5-c-5-clambda-7-d-7-b-2-7-d-5-c-5-c-29-3-c-2-fspan-3-e-3-c-2-fp-3-e,3-cp-3-e-law-of-light-reflection-are-3-a-3-c-2-fp-3-e_-_3-cp-3-e-2-3-c-2-fp-3-e,3-cp-3-e-on-what-principle-circuit-breaker-works-3-f-3-c-2-fp-3-e_-_3-cp-3-e-electromagnet-3-c-2-fp-3-e,3-cp-3-e-radiations-present-in-atmosphere-due-to-different-radioactive-substances-are-called-3-a-3-c-2-fp-3-e_-_3-cp-3-e-background-radiations-3-c-2-fp-3-e,3-cp-3-e-radio-waves-are-3-c-2-fp-3-e_-_3-cp-3-e-electromagnetic-waves-3-c-2-fp-3-e,3-cp-3-e-regions-in-which-pressure-of-air-is-greater-than-the-normal-atmospheric-pressure-is-called-3-c-2-fp-3-e_-_3-cp-3-e-compressions-3-c-2-fp-3-e,which-of-the-following-quantities-is-not-changed-during-refraction-of-light-3-f_-_frequency