Question

laser light is coherent means

All the waves have same frequency or wavelength

All the waves are exactly in the same phase

All the waves are exactly opposite in phase

All the waves carry same energy​

Answer 1

Answer:

Calculate the weight of water absorbed by different 100 gram

of materials like gram, moong, resins in 10 hours. solve this question please

Answer 2

Answer:

All the waves are exactly in the same phase