11th Class Physics MCQS Thermodynamics Online Test 2

3-cp-3-e-escape-velocity-on-the-surface-of-earth-is-11-2-kms-3-csup-3-e-1-3-c-2-fsup-3-e-the-escape-velocity-on-the-surface-of-another-planet-of-same-mass-as-that-of-earth-but-of-c-2-a-0-3-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-b-4-7-d-5-c-5-c-29-3-c-2-fspan-3-e-times-of-the-radius-of-the-earth-is-3-a-3-c-2-fp-3-e_-_3-cp-3-e-5-6-kms-3-csup-3-e-1-3-c-2-fsup-3-e-3-c-2-fp-3-e,3-cp-3-e-if-a-string-vibrates-in-four-segments-at-a-frequency-of-120-hz-2-c-its-fundamental-frequency-will-be-5-c-5-c-3-a-3-c-2-fp-3-e_-_3-cp-3-e-30-hz-3-c-2-fp-3-e,3-cp-3-e-the-work-done-is-said-to-be-negative-when-force-and-displacement-are-3-a-3-c-2-fp-3-e_-_3-cp-3-eanti-parallel-3-c-2-fp-3-e,3-cp-3-e-time-rate-of-change-in-momentum-of-a-body-is-equal-to-3-a-3-c-2-fp-3-e_-_3-cp-3-eimpulse-3-c-2-fp-3-e,3-cp-3-e-which-pair-has-same-dimensions-3-f-3-c-2-fp-3-e_-_3-cp-3-e-momentum-and-impulse-3-c-2-fp-3-e,3-cp-3-ea-body-is-thrown-vertically-upward-with-initial-velocity-9-8-ms-3-csup-3-e-1-3-c-2-fsup-3-e-it-will-reach-the-height-3-a-3-c-2-fp-3-e_-_3-cp-3-e-4-9-ms-3-csup-3-e-1-3-c-2-fsup-3-e-3-c-2-fp-3-e,3-cp-3-ea-system-on-which-no-external-agency-exerts-any-force-is-called-3-a-3-c-2-fp-3-e_-_3-cp-3-eisolated-system-3-c-2-fp-3-e,3-cp-style-3-d-22-text-align-3-ajustify-22-3-e-3-cspan-style-3-d-22-font-size-3-a-11-0-pt-22-3-e-3-cspan-style-3-d-22-color-3-ablack-22-3-e-if-the-resultant-of-two-vectors-each-of-magnitude-f-is-also-of-magnitude-f-2-c-the-angle-between-them-will-be-3-a-3-c-2-fspan-3-e-3-c-2-fspan-3-e-3-c-2-fp-3-e_-_3-cp-3-e-120-3-csup-3-eo-3-c-2-fsup-3-e-3-c-2-fp-3-e,3-cp-style-3-d-22-text-align-3-ajustify-22-3-e-3-cspan-style-3-d-22-font-size-3-a-11-0-pt-22-3-e-3-cspan-style-3-d-22-color-3-ablack-22-3-e-two-waves-having-same-frequency-and-travelling-in-the-same-direction-super-impose-each-other-and-corresponding-phenomenon-is-called-3-a-3-c-2-fspan-3-e-3-c-2-fspan-3-e-3-c-2-fp-3-e_-_3-cp-3-e-interference-3-c-2-fp-3-e,3-cp-style-3-d-22-text-align-3-ajustify-22-3-e-3-cspan-style-3-d-22-font-size-3-a-11-0-pt-22-3-e-3-cspan-style-3-d-27-font-family-3-a-22-arial-22-2-c-22-sans-serif-22-27-3-e-if-a-wave-travelling-indenser-medium-is-reflected-from-the-boundary-of-rarer-medium-2-c-the-phase-change-in-the-wave-is-3-a-3-c-2-fspan-3-e-3-c-2-fspan-3-e-3-c-2-fp-3-e_-_3-cp-3-e-3-cspan-style-3-d-22-font-size-3-a-11-0-pt-22-3-e-3-cspan-style-3-d-27-font-family-3-a-22-arial-22-2-c-22-sans-serif-22-27-3-e-180-3-csup-3-eo-3-c-2-fsup-3-e-3-c-2-fspan-3-e-3-c-2-fspan-3-e-3-c-2-fp-3-e,a-carnot-engine-has-an-efficiency-of-50-25-when-its-sink-temperature-is-at-27-3-csup-3-eo-3-c-2-fsup-3-ec-the-temperature-of-source-3-a_-_5-c-28327-5-eo-c-5-c-29,a-chimney-works-best-when-it-is-3-a_-_tall,a-cycle-of-petrol-engine-undergoes-3-a_-_four-process,a-device-based-upon-the-thermodynamics-property-of-matter-is-called-3-a_-_heat-engine,a-diatomic-gas-molecules-has-3-a_-_all-translational-2-c-rotational-and-vibrational-energy,a-gas-performs-10-j-of-work-while-expanding-adiabatically-the-change-in-its-internal-energy-is-3-a_-_10-j,a-gas-which-strictly-obeys-the-gas-law-under-all-conditions-of-temperature-and-pressure-is-called-3-a_-_ideal-gas,a-heat-engine-operates-between-the-temperature-1000-k-26-nbsp-3-band-400-k-its-efficiency-is-3-a_-_60-25,a-single-equation-that-relates-all-the-three-variables-is-given-by-3-a_-_pv-2-ft-3-d-constant,a-system-does-600-j-of-work-and-at-the-same-time-has-its-internal-energy-increased-by-320-j-how-much-heat-has-been-supplied-3-f_-_920-j,which-one-is-true-for-isothermal-process-3-f_-_q-3-d-w