2. With reference to street-lighting, how do sodium lamps differ from LED lamps? (1) Sodium Lamps produce light in 360 degrees but it is not so in the case of LED lamps. (2) As street-lights,sodium lamps have longer life span than LED lamps. (3) The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street-lighting. Select the correct answer using the codes given below: (a) 3 only (b) 2 only (c) 1 and 3 only (d) 1, 2 and 3

Click on the right option
1) 3 only
2) 2 only
3) 1 and 3 only ✅
a) 1, 2 and 3