Geometric and Physical Optics

Which of the following types of electromagnetic radiation has the longest wavelength?

An electromagnetic wave has a wavelength of $3 \times 10^{-7}$ meters. What is its frequency?

In the wave equation $y(x, t) = A \sin(kx - \omega t + \phi)$, what does the term 'A' represent?

Which of the following describes the phenomenon where light bends as it passes from one medium to another?

A ray of light travels from air ($n_1 = 1$) into water ($n_2 = 1.33$) at an angle of incidence of 30°. What is the angle of refraction in the water?

A light ray is incident on a glass slab (n=1.5) at an angle such that the reflected and refracted rays are perpendicular to each other. What is the angle of incidence?

An object is placed in front of a convex lens at a distance greater than twice the focal length. Which of the following describes the image formed?

An object is placed 30 cm from a lens with a focal length of 10 cm. What is the image distance?

An object of height 5 cm is placed 20 cm in front of a concave mirror with a focal length of -10 cm. What is the height and nature of the image?

What occurs when two waves are in phase and overlap?