Exams › NEET › Physics

Light waves travel in vaccum along the y-axis. Then the wave front is:

1. \( y= \) constant
2. \( x= \) constant
3. \( z= \) constant
4. \( x+y+z= \) constant

Correct answer: \( y= \) constant

Solution

A wavefront is a surface joining points with the same phase, and it is always perpendicular to the direction of propagation. Since the light travels along the y-axis, the constant-phase surfaces are planes of constant y.

Related NEET Physics questions

• The observed wavelength of light coming from a distant galaxy is found to be increased by \( 0.5 \% \) as compared with that coming from a terrestrial source. The galaxy is.
• In case of refraction of light
• Three simple harmonic motions in the same direction having the same amplitude a and same period are superposed. If each differs in phase from the next by \( 45^{\circ}, \) then : This question has multiple correct options
• A magnifying glass is used to read the newspaper. As it is moved far away from the newspaper
• Assertion: Virtual object can't be seen by human eye. Reason: Virtual object is formed by converging rays.
• Fraunh offer line of the solar system is an example of:

⚔️ Practice NEET Physics free + battle 1v1 →