RRB NTPC GS Wave Optics Mock Test Daily Tests General Awareness General Science Group D NTPC RRB November 18, 2020November 17, 2020TestsKindly Enter your Name and Email Address then Press Next to Start your Test Name Email Address 1. If the shift of wavelength of light emitted by a star is towards violet, then this shows that star isDeselect AnswerStationaryMoving towards earthMoving away from earthInformation is incomplete2. Soap bubble looks coloured due toDeselect Answerdispersionreflectioninterferenceany one of these3. Which of the following are not electromagnetic wavesDeselect AnswerCosmic raysGamma raysb-raysX-rays4. Through which character we can distinguish the light waves from sound wavesDeselect AnswerInterferenceRefractionPolarisationReflection5. Illumination of the sun at noon is maximum becauseDeselect AnswerScattering is reduced at noonRefraction of light is minimum at noonRays are incident almost normallyThe sun is nearer to earth at noon6. The rectilinear propagation of light in a medium is due to itsDeselect AnswerHigh velocityLarge wavelengthHigh frequencySource7. Infrared radiation is detected byDeselect AnswerSpectrometerPyrometerNanometerPhotometer8. It is believed that the universe is expanding and hence the distant stars are receding from us. Light from such a star will showDeselect AnswerShift in frequency towards longer wavelengthsShift in frequency towards shorter wavelengthNo shift in fequency but a decrease in intensityA shift in frequency sometimes towards longer and sometimes towards shrter wavelengths9. Ozone is found inDeselect AnswerStratosphereIonosphereMesosphereTroposphere10. Heat radiations propagate with the speed ofDeselect Answera-raysb-raysLight wavesSound waves11. Assuming that universe is expanding, if the spectrum of light coming from a star which is going away from earth is tested, then in the wavelength of lightDeselect AnswerThere will be no changeThe spectrum will move to infrared regionThe spectrum will seems to shift to ultraviolet sideNone of above12. Laser beams are used to measure long distance becauseDeselect AnswerThey are monochromaticThey are highly polarisedThey are coherentThey have high degree of parallelism13. The phenomenon of interference is shown byDeselect AnswerLongitudinal mechanical waves onlyTransverse mechanical waves onlyElectromagnetic waves onlyAll the above types of waves14. A star is emitting yellow light. If it is accelerated towards earth then to an observer on earth, it will appearDeselect Answershinning yellowgradually changing to violetgradually changing to redunchanged15. Which of the following is not a property of lightDeselect AnswerIt requires a material medium for propagationIt can travel through vacuumIt involves transportation of energyIt has finite speed16 out of 15Click Submit Button to complete the Test.Join Our Telegram Channel for Latest Updates Click Here! RRB NTPC GS Wave Optics Mock TestRRB NTPC & Group D General Science Free Mock TestsProperties of Matters, Heat, Sound, Ray OpticsCells, Tissues, Plant Physiology, Human PhysiologyJoin Our Telegram & Whatsapp Groups for Latest Updates!