1.A beam of parallel incoming light rays reflect off a convex mirror convergently. That means that they meet after reflection (True or false)
2. Angle of incidence is equal to angle of reflection only in plane mirros. For curved mirrors of incidence and angle of reflection are not equal (true or false)
3.When light leaves air and enters water its speed stays constant (true or false)
4. In a standing wave, the antinodes oscillate with maximum amplitude (true or false)
5. In a standing wave the separation between two consecutive nodes is 20cm. What is the wavelength of the wave?