Class name Subject Book title Chapter number Content Created at
Class XII Physics Physics Part-II 1 2026-27 Physics FIGURE 9.26 Schematic diagram of a reflecting telescope (Cassegrain). the telescope tube. One must have an eyepiece and the observe...
Class XII Physics Physics Part-II 2 clearly at the shadow cast by an opaque object, close to the region of geometrical shadow, there are alternate dark and bright regions just like in...
Class XII Physics Physics Part-II 1 material of lower refractive index. Light incident at an angle at one end comes out at the other, after multiple internal reflections, even if the ...
Class XII Physics Physics Part-II 1 unit for power of a lens is dioptre (D): 1 D = 1 m .–1 If several thin lenses of focal length f 1 f 2 f3,.. are in contact, the effective focal len...
Class XII Physics Physics Part-II 1 between f and 2f from a convex lens can be seen on a screen placed at the image location. If the screen is removed, is the image still there? This ...
Class XII Physics Physics Part-II 1 of curvature 36 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image? Describe the nature and size of th...
Class XII Physics Physics Part-II 1 of glass = 1.5. Does the answer depend on the location of the slab? 9.17 (a) Figure 9.28 shows a cross-section of a ‘light pipe’ made of a glass fi...
Class XII Physics Physics Part-II 1 incident on the face of a prism of refracting angle 60° so that it just suffers total internal reflection at the other face? The refractive index o...
Class XII Physics Physics Part-II 1 magnifying glass, one usually positions one’s eyes very close to the lens. Does angular magnification change if the eye is moved back? (c) Magnifyi...
Class XII Physics Physics Part-II 1 20mm apart. If the radius of curvature of the large mirror is 220mm and the small mirror is 140mm, where will the final image of an object at infin...
Class XII Physics Physics Part-II 2 Wave Optics Chapter Ten WAVE OPTICS 10.1 I NTRODUCTION In 1637 Descartes gave the corpuscular model of light and derived Snell’s law.Itexplainedthe...
Class XII Physics Physics Part-II 2 are then the locus of points which have the same amplitude and vibrate in spherical. the same phase are spheres and we have what is known as a sphe...
Class XII Physics Physics Part-II 2 the shape of the wavefront at t = , we draw spheres of radius v from each point on the spherical wavefront where v represents the speed of the wave...
Class XII Physics Physics Part-II 2 A incident on the interface at an angle i as shown in the and G 1 2nd represent rays. figure. Let be the time taken by the wavefront to travel the ...
Class XII Physics Physics Part-II 2 prediction from refraction shown by the E 1 mineral calcite in this N the corpuscular model of light and as later experiments work in addition to S...
Class XII Physics Physics Part-II 2 two waves. You may recall that we had discussed the superposition principle in Chapter 14 of your Class XI textbook. Indeed the entire field of int...
Class XII Physics Physics Part-II 2 be given by y = y + y = 2 a cos t 1 2 Since the intensity is proportional to the square of the amplitude, the resultant intensity will be given by ...
Class XII Physics Physics Part-II 2 a point R [Fig. 10.9(b)] for which S R – S R = –2.5 2 1 The waves emanating from S will arrive exactly two and a half cycles later than the waves f...
Class XII Physics Physics Part-II 2 the displacement produced by S woul2 be i a e u y2= a cos ( t + ) a i and the resultant displacement will be given by w / o e y = y1+ y2 t u = a [c...
Class XII Physics Physics Part-II 2 of direction, the secondary waves are spherical. The rays are then perpendicular to both the wavefronts and the time of travel is the same measured...
Class XII Physics Physics Part-II 2 different sources which can be both constructive and destructive, as shown in Young’s experiment. 3. Diffraction phenomena define the limits of ray...
Class XII Physics Physics Part-II 2 is the intensity of light at a point where path difference is /3? 10.6 A beam of light consisting of two wavelengths, 650 nm and 520 nm, is used to...
Class XII Physics Physics Part-II 3 Physics Chapter Eleven DUAL NATURE OF RADIATION AND MATTER 11.1 I NTRODUCTION The Maxwell’s equations of electromagnetism and Hertz experiments on ...
Class XII Physics Physics Part-II 3 irradiated by ultraviolet light, emitted negatively charged particles having smallspeeds.Also,certainmetalswhenheatedtoahightemperaturewere foundto...
Class XII Physics Physics Part-II 3 –19J. This unit of energy is commonly used in atomic and nuclear physics. The work function ( ) 0epends on the properties of the metal and the natu...