Huygens’ wave theory of light: In 1678, Dutch physicist Christian Huygens proposed a theory to explain the wave nature of light. This theory is called Huygens’ wave theory of light. According to wave theory of light, a source of light […]
Tag: Physics Question and answer
State Huygens’ principle.
It is the geometrical construction to determine new position of a wave front at any later instant from its position at any earlier instant. Statement: i. Every point on the primary wave front acts as a secondary source of light […]
State the main characteristics of wave normal & Wave front.
Characteristics of wave normal I. It gives the direction of propagation of wave. II. It is perpendicular to wave front. III. In a homogeneous isotropic medium, wave normal is same as direction of ray of light. IV. It is drawn […]
Define the term of wave front, wave normal and wave surface.
Definition: Wave front: A locus of all the points of the medium to which waves reach simultaneously so that all the points are in the same phase is called wave front. Wave normal: A perpendicular drawn to the surface of […]
State the merits and demerits of Huygens’ wave theory of light.
Merits of Huygens’ wave theory of light: It gives satisfactory explanation for laws of reflection, refraction and double refraction of light assuming transverse nature of the light waves. It also explains the theory of interference and diffraction. It explains the […]
State the postulates & drawbacks of Newton’s corpuscular theory.
Postulates of Newton’s corpuscular theory: Every source of light emits large number of tiny particles known as ‘corpuscles’ in a medium surrounding the source. These corpuscles are perfectly elastic, rigid and weightless. The corpuscles travel in a straight line with […]
What is vertical circular motion? Show that motion of an object revolving in vertical circle is non uniform circular motion.
A body revolves in a vertical circle such that its motion at different points is different then the motion of the body is said to be vertical circular motion. Consider an object of […]