Unit : 10 Wave
1).What is the speed of light in vacuum.i. 3×10 km/sii. 2.25 x10 m/siii. 3×10 m/siv. 3×10 cm/sAns: iii. 3×10 m/s 2). Which colour of light has the highest speed in a medium?i. blueii. Violetiii. Orangeiv.RedAns: iv.Red 3). Absorption of which ray causes hotness?i. UV raysii. Infrared rayiii. X-rayiv. Gamma rayAns: ii. Infrared ray 4). Which…
