Plane waves through a narrow gap emerge as circular waves. This phenomenon is known as
A ray of light incident at an angle \(\theta\) in a rectangular prism grazes the surface of the prism on emerging from the prism. Determine the value of the angle. [Absolute refractive index of the material of the prism is 1.5]
The diagram above illustrates a wave setup between two fixed ends 4.0m apart. If the speed of the wave is 1.0\(ms^{-1}\), its wavelength and frequency respectively are
Two plane mirrors are inclined at an angle 20° to each other. Determine the number of images formed when an object is placed between them.
A converging lens of focal length 10cm forms an erect image three times the size of the real object. Calculate the distance between the image and the object.
