Question
Physics Question on Electromagnetic waves
Light appears to travel in a straight line, because
A
its wavelength is very small
B
it is not absorbed by surrounding
C
its velocity is very large
D
it is reflected by surrounding
Answer
its wavelength is very small
Explanation
Solution
Light appears to travel in a straight line because diffraction (or deviation from the path) is least in light. Diffraction is least because -of small wavelength of light. So small wave length of light causes the light to travel almost in straight line.