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A beam of unpolarised light of intensity I0 is passed through a polaroid A and then through another polaroid B which is oriented so that its principal plane makes an angle of 45° relative to that of A. The intensity of the emergent light is : - physics 20130 AnswerA student traces the path of a ray of light through a triangular glass prism for different values of angle of incidence. On analyzing the ray diagrams, which one of the following conclusions is he likely to draw? CBSE- class10- Science 20151 AnswerShow that the incident ray of light is parallel to the emergent ray of light then light falls obliquely on a side of a rectangular glass slab. -2008 CBSE Physic class 101 AnswerThe Poisson’s relation linking the gravity and magnetic potentials assumes the same anomaly source with: (-Gate geology and geophysics 2014)1 Answer Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass? The speed of light in vacuum is 3 × 108 m/s. -CBSE Physics 1 AnswerA ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal? why? -CBSE Physics 1 AnswerDraw a ray diagram to show the refraction of light through a glass prism. Mark on it -2008 CBSE Physic class 101 AnswerThe electric field intensity of a plane wave traveling in free space is give by the following expression -GATE EC 20151 AnswerA ray of light LM is incident on a mirror as shown in the figure. The angle of incidence for this ray is the angle between it and the line joining two other points in the figure. Name these two points. -2009 CBSE Physic class 101 AnswerWhy is the distance between stars expressed in light years? What do you understand by the statement that a star is eight light years away from the Earth? cbse-class8-physics-20151 AnswerA beam of white light falling on a glass prism gets split up into seven colours marked 1 to 7 as shown in the diagram -CBSE physics class 101 AnswerWhat is the use of light pen. CBSE CLASS VI-20121 AnswerTwo mirrors meet at right angles. A ray of light is incident on one at an angle of 30o as shown in figure. Draw the reflected ray from the second mirror. cbse-class8-physics-20151 AnswerMention against each of the following whether regular or diffused reflection will take place when a beam of light strikes. Justify your answer in each case. cbse-class8-physics-20151 AnswerMeasurement of optical absorption of a solution is disturbed by the additional stray light falling at the photo-detector. 1 Answer A ray of light AM is incident on a spherical mirror as shown in the diagram. -CBSE physics class 101 AnswerThe electric and magnetic fields for a TEM wave of frequency 14 GHz -gate-ece-20111 AnswerDuring the experiment, to trace the path of ray of light through the glass prism, students reported the following observations : CBSE class10 Science 20161 AnswerDraw a ray diagram to show the refraction of light through a glass prism. Mark on it - 2008 CBSE Physic class 101 AnswerWhat is the principle of reversibility of light? -2008 CBSE Physic class 101 Answer