The tangent of the polarising angle is equal to the refractive index of the refracting medium at which partial reflection takes place. According to Brewster’s law, tan ip = μ State the main uses of polaroids. For Question and answer […]
Category: Maharashtra HSC Board Question and Answer
HSC Maharashtra Board Question and Answer
Define unpolarised light? Give its symbolic representation.
Unpolarised light: A light in which the vibrations of the electric vectors are in all possible directions, which are perpendicular to the directions of propagation is called as unpolarised light. Symbolic representation of unpolarised light is as shown in figure […]
What do you mean by polarisation?
Polarisation: The phenomenon of restriction of the vibration of light waves in a particular plane perpendicular to direction of wave motion is called polarisation of light. Define unpolarised light? Give its symbolic representation. For Question and answer of other subject […]
Explain refraction of light on the basis of wave theory. Hence prove laws of refraction .
Laws of refraction Ratio of velocity of light in rarer medium to velocity of light in denser medium is a constant called refractive index of denser medium w.r.t. rarer medium. The incident rays, refracted rays and normal lie in the […]
Give a brief account of Huygens’ wave theory of light.
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 […]
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 […]