Question

why light travels in a straight line???? ​

Answer 1

Hi dear ❤(ӦｖӦ｡)❤(ӦｖӦ｡)

Hint: Light travels in a straight line because the diffraction effect is least due to the small wavelength of light. So the small wavelength of light produces negligible diffraction and therefore light travels along a straight line

Answer 2

Answer: i hope this answer may help you dear ^.^

Light travels in the straight line because it does not generally interact with the medium and wherever it interacts it does change its path like when it is entering a different medium with different permeability and permittivity (denser or rarer). This interaction and bending of light is called refraction.