To get more orders of spectra using a diffraction grating, the wavelength should be?IncreasedDecreasedNone of these When a ray of light passes from rarer to denser medium , its _ remains…

The fringe spacing in double slit experiment can be increased by?increasing the separation of slitsdecreasing the distance between the slit and screenusing monochromatic light of shorter wavelength than beforeNone of these…

A 5 kg object starting at rest, falls to the ground from a height of 10 m. Just before hitting the earth, what will be the K.E.? if the friction force…

If we add all the 7 colours of rainbow (red, yellow, blue, green, orange, violet and indigo), the resultant colour would be??BlackWhiteDark BlueNone of these The vector ' i + k…

The special large cells with thick walls are called?exosporesEndosporesHeterocystNone of these An organism that forms a symbiotic association with Anthoceros?SpirogyraNostocUlothrixAll of the above Sexual reproduction is absent in?VolvoxNostocAspergillusUlothrix Oplus_0

Fucoxanthin give____________color to algae?RedBrwonBlueYellow Ergot is obtained from?RhizopusClaviceps purpureaAlbugoNone of these Who is called the father of mycology?Heinrich Anton de BaryAristotleC. LinniousNone of above Rhizopus stolonifer belongs to which class??AcrasiomycetesZygomycetesAscomycetesDeuteromycetes The…

81- Which country has the largest reserves of Oil??Question grade : 1 81/100United States. ChinaRussiaVenezuela 82- Who becomes the first black women Press Secretary of White House??Question grade : 1 82/100Jen…