Cause of Refraction : The speed of the light in different transparent substances is different. For example speed of light in air is 3×10⁸ m/s and that of in glass is 2×10⁸ m/s. It is clear that the two speeds Read more
Refract means bending. The bending of ray of light when it pass from one medium to another medium is known by a term called refraction. Refraction of Light happens due to different speed of light in different medium. Speed of Read more
Important mathematical relations of measurement. These are very important mathematical relations. It must be on the tongue of a student . These common relations are seen very frequently in the sum . | Mass 1 Ton = 10 Quintals 1 Read more
Important Squares and their square root. THE STUDENT MUST MEMORISE THIS BY TONGUE. 42 = 16 112 = 121 52 = 25 √(25)=5 62 = 36 √(36)= 6 72 = 49 √(49 ) = 7 82 = 64 √(64)= 8 Read more
This chapter is about a letter written by a young lady; whose father was victim of this terror attack. Q(01) Where was the writer’s father when the terrorist attack took place? Who was with him? Ans: The writer’s father was Read more
Explore “Lochinvar” which is include in the syllabi of English Literature ICSE Class 8. Q(01) Where was the Lochinvar going ? Why was he in such a hurry? Ans: Lochinvar was going to the Netherby hall in the marriage ceremony Read more
खेल मनोरंजन के स्रोत हैं। वे राहत और दुख, कठिनाइयों और बाधाओं से हमको बचाते हैं। वे विनोदी भावना मन में न बैठाने और एक हल्के-फुल्के अंदाज में जीवन के भारी बोझ को लेने के लिए प्रेरित करते हैं। जीने Read more
जब छोटे थे हम मन में एक सवाल आता था आसमान को देख कर, यदि मेरे पंख होते तो क्या होता? अगर होते तो वो बड़े अनोखे होते। वो कभी न थमते, न कभी मुझे किसी के हाथ आते। बस Read more
भूमिका: यात्रा का अपना एक सुखद अनुभव होता है। हर यात्रा अपने में कई यादें समेटे होती है पर कुछ बहोत यादगार होती हैं । गर्मी की छुट्टियों में अधिकतर लोग घूमने जाते हैं और इस मौसम में पर्वतों की Read more
Newton’s third law : ‘To every action there is an equal and opposite reaction.’ This law can be realised while dropping a ball, hammering a nail , holding a hose pipe of high pressurised water pump , during bicycling etc. Read more
