1A transformer works on:AAlternating current onlyBDirect current onlyCBoth AC and DC equallyDStatic chargesView AnswerDiscussWorkspaceReportSaveEasy
2Which force keeps the planets in orbit around the Sun?AMagnetic forceBGravitational forceCElectrostatic forceDFrictional forceView AnswerDiscussWorkspaceReportSaveEasy
3The rainbow is formed due to:ADispersion, refraction and reflection of sunlight in raindropsBOnly reflectionCDiffraction onlyDPolarisationView AnswerDiscussWorkspaceReportSaveEasy
4The acceleration due to gravity on Earth's surface is about:A9.8 m/s²B1.6 m/s²C6.67 m/s²D98 m/s²View AnswerDiscussWorkspaceReportSaveEasy
5The speed of light in vacuum is approximately:A3 × 10⁸ m/sB340 m/sC3 × 10⁵ km/sD3 × 10⁶ m/sView AnswerDiscussWorkspaceReportSaveEasy