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 […]
Tag: hsc board physics question and answer
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 banking of road? Explain the necessity of banking of the road.
Banking of road: The process of raising outer edge of a road over its inner edge through certain angle is known as banking of road. Necessity of banking of the road: i. When a vehicle moves along horizontal curved road, […]
What is the difference between uniform circular motion and non uniform circular motion? Give examples.
Sr. No U.C.M Non-U.C.M 1. Circular motion with constant angular speed is known as uniform circular motion Circular motion with variable angular speed is called as non-uniform circular motion 2. For U.C.M, α = 0 For non-U.C.M, α≠ 0 3. In U.C.M, work […]
U.C.M is an accelerated motion. Justify this statement.
Definition: In U.C.M, the magnitude of linear velocity (speed) remains constant but the direction of linear velocity goes on changing i.e., linear velocity changes. The […]