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Showing posts from October, 2016

लक्ष्य की उंचाई सफलता को गति और उर्जा प्रदान करती है। परन्तु ऐसा लक्ष्य जो किसी बच्चे की क्षमता से अत्यधिक है । वह बच्चे को मानसिक रोगी या पागल बनाता है । और कभी कभी बच्चे आत्महत्या का शिकार हो जाते हैं। इसलिए मेरा मानना है कि इस तरह का दबाव अनुचित है। जब जीवन ही नहीं रहेगा तो जीवन में लक्ष्य का कोई मतलब नहीं है। जब लक्ष्य बच्चे की क्षमता की परिधि के बाहर होता है , तो वह लक्ष्य उसके लिए बोझ बन जाता है । चुंकि बच्चे अपने माता पिता को खुश देखना चाहते हैं, इसलिए वे झूठ बोलने लगते हैं। जैसे मैने याद कर लिया, होमवर्क कर लिया , मै नकल नहीं करता हूं , मै 90% से जादा अंक प्राप्त करूंगा इत्यादि। इस दबाव में वे अपने अन्दर छुपी मेधा को पररव नहीं पाते । और माता पिता के सोंच के ढांचे में फंस जाते हैं। और नौकरी की खोज में दर दर भटकते रहते हैं। आज के इस प्रतिस्पर्धा के कारण दूसरेआम बच्चे थोड़ा तकनीकी सीखकर रोजी रोटी की दौड़ में इस बच्चे से आगे निकल जाते हैं। और सबसे बड़ी बात यह है कि वे निम्न और कमजोर मानसिकता के शिकार नहीं बनते। मेरे अनुसार ऊंचे लक्ष्य को अपने बच्चे की क्षमता के अनुसार निश्चित…

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 of the light are different. When light enters from air to glass the speed of the light gets decreased at the junction of the two media. This change in speed of the light affects the speed the of the various segments of the beam of the light. This can be concluded by the image. This change in speed of the light causes refraction. Therefore the refraction of light is due to the change in the speed of light on going from one medium to another.Now it is good question why change in speed causes refraction. Here is the answer. If we look the image carefully. The left part of the beam of light enters first into another medium while its right part remains still in first medium here air. Therefore the speed of the left part of the beam experiences speed reduction before that of the right…

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 light in air is 3x10⁸m/s and that of in glass is 2x10⁸m/s. Refraction of Light: It can be defined as the change in the direction of light when it passes from one medium to another medium obliquely.
A transparent substance in which light can travel is called a medium. For example Air, water, glass, kerosene etc are the transparent substances in which light can travel.

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 . | Mass1 Ton = 10 Quintals 1 Quintal = 100 Kg 1 Kg = 1000 g 1 pound = 453 gDistance 1 Km = 1000 m 1m = 100 cm 1 feet = 12 inches1 inch = 2.54 cm 1 yard = 3 feetTime 1 year = 365 days 1 month = 30 days 1 week = 7 days 1 hour = 60 min 1 min = 60 seconds1 day = 24 hoursCountable 1 gross = 1441 dozan = 12 Re 1 = 100 Paise

Important Squares and their square root.

42 = 16112 = 121 52 = 25 √(25)=5 62 = 36 √(36)= 6 72 = 49√(49 ) = 7 82 = 64√(64)= 8 92 = 81 √(81)= 9 102 = 100 √(100) = 10 112 = 121√(121) = 11 122 = 144√(144 ) = 12 132 = 169√(169 ) = 13 142 = 196√(196 ) = 14 152 = 225√(225 ) = 15 162 = 256√(256 ) = 16 172 = 289√(289 ) = 17 202 = 400√(400 ) = 20 252 = 625√(625 ) = 25

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 at the Indian restaurant on the first floor of the Oberoi hotel when the terrorist attack took place. His two best friends were with him .They were having dinner together. Q(02) How did the writer's father save himself? What were the qualities that helped him to protect?Ans: The terrorist rounded up the hostages and made them to climb the service staircase, the eighteenth floor. On reaching the eighteenth floor landing ,they made the people line up against the wall then they opened fire on the people simultaneously . Her father was at the center of the line and body as soon as the firing began . He protected himself out of reflex or his presence of mind .     Q(03)What did the writer's father and other survivors do to …