Question 1: Why was the author's career as an animals collector short lived? Click for Answer >> Question 2: 'However the experience proved invaluable .' Which experience is the author? Click for Answer >> Question 3: What brought about a change in the author's fortunes? Click for Answer >> Question 4 : In brief describe the bizcorre jappening that the author's mother was subjected? Click for Answer >> Question 5: Who was Pythagoras ? Describe the author's adventure with Pythagoras.? Click for Answer >> Question 6: Describe some of the creatures that were a part of the author's zoo? Click for Answer >> Question 7: What was the reason behind the author's wish to reason behind the author's wish to? Click for Answer >> Question 8: What proof of Durrell's sense of humour do you find in the text?Cite a few examples? Click for Answer >> Answer starts below: Answer

Speed: Speed is the rate at which an object covers a distance. Speed is a scalar quantity. It has no direction . Velocity: Velocity may be defined as the rate of change of displacement. Or It can be also defined as : “ rate of change of position of an object.” Velocity is a vector quantity. It has direction. For example : If an object moving with a speed of 65 km / hr towards East direction. Then we say its speed is 65 km/hr East.

Rest: A body is said to be at rest when it does not change its position with respect to their environment and time. For example house, tower, tree etc. MOTION: A body is said to be in motion when it changes its position with respect to environment and time. For example moving car, walking man etc. TYPES OF MOTION : Linear Motion Circular Motion Rotatory (or Rotational ) motion Oscillatory (or Periodic ) motion Linear Motion: When a body moves along a straight line ,then the body is said to be in linear motion. Circular Motion: When a body moves along a circular path ,then the body is said to be in circular motion. Rotatory Motion: When a body moves on its on axis , then the body is said to be in Rotatory motion. Oscillatory Motion : When a body repeats its path continuously , then the body is said to be in oscillatory motion.

Work And Time Concept For Class 8 Part 1 Work And Time Concept For Class 8 Part 2 Work And Time Short Cut Trick For Class 8 Part 3

  Express the following as a sum of perfect square:     16a 2 + b 2 + 9c 2 - 4ab - 3bc - 12ca =1/2.(2.16a 2 + 2. b 2 + 2. 9c 2 - 8ab - 6bc - 24ca) = 1/2.(16a 2 + 16a 2 + b 2 + b 2 + 9c 2 + 9c 2 - 8ab - 6bc - 24ca) = 1/2.(16a 2 - 8ab + b 2 + b 2 - 6bc + 9c 2 + 16a 2 - 24ca + 9c 2 ) = 1/2.{(16a 2 - 8ab + b 2 ) + ( b 2 - 6bc + 9c 2 ) + ( 16a 2 - 24ca + 9c 2 )} = 1/2.{(16a 2 - 2.4a.b + b 2 ) + ( b 2 - 2.b.3c + 9c 2 ) + ( 16a 2 - 2.4a.3c + 9c 2 )} = 1/2.{(4a - b) 2 + ( b-3c ) 2 + ( 4a-3c ) 2 } Answer

If    a 2 +b 2 +4c 2 = ab+2bc+2ca.    Prove that a = b = 2c Multiplying both side by 2 we have. 2. a 2 + 2. b 2 + 2.4c 2 = 2.ab + 2.2bc + 2.2ca 2. a 2 + 2. b 2 + 2.4c 2 = 2ab + 4bc + 4ca 2. a 2 + 2. b 2 + 2.4c 2 - 2ab - 4bc - 4ca =0 ( a 2 - 2ab + b 2 ) + ( b 2 - 4bc + 4c 2 ) + ( a 2 - 4ca + 4c 2 ) = 0 ( a - b ) 2 + (b - c) 2 + (a- 2c) 2 = 0 If the Sum of the squares will be equal to zero then the individual terms will also be equal to zero. ∴ ( a - b ) 2 = 0 (b - c) 2 = 0 and (a- 2c) 2 = 0 Now ( a - b ) 2 = 0 , or ( a - b ) = 0 or a = b Similarly (b - c) 2 = 0 , or (b - c) = 0 or b = c Similarly (a- 2c) 2 = 0 , or (a- 2c) = 0 . or a = 2c ∴ a = b = 2c Proved

गर्मी का मौसम भारत में मई और जून के महीने में आता है । हम इस मौसम में बहुत असहज महसूस  करते हैं।  क्योंकि गर्मी का मौसम  बहुत आसान मौसम नहीं है। इस गर्म से छुटकारा पाने के लिए मैने बहुत पहले से एक शांत जगह पर गर्मी की छुट्टी बिताने की योजना बनाई थी । हम अपने परिवार के साथ कश्मीर चले गये । गर्मी की छुट्टी के दूसरे ही दिन हमने अपना शहर छोड़ दिया । पहले हम एसी टिकट के साथ लंबे समय तक ट्रेन यात्रा का आनंद लिए । यह कश्मीर की राजधानी तक पहुंचने के लिए बहुत अच्छी यात्रा थी। जब हम वहाँ पर उतरे तब वहाँ का मौसम अछा नही था । हमने देखा वहाँ का मौसम एक दम बदलने लगा । वहाँ गर्मी का कोई संकेत नही था । जैसे वहाँ हम उतरे तो इन तस्वीरों को देख कर यह महसूस की वास्तव में कश्मीर एक जन्नत है। कश्मीर देखना मेरे बचपन का एक सपना था और जो आज सच हुआ। हम एक होटल ले लिए जो डल झील की नाव पर था । डल झील पर नौकाविहार बहुत अनंददायक था। अन्य अंक भी लिखा जा सकता है। नीचे देखें। बच्चों को गर्मियों की छुट्टियों में आराम मिलता है। अध्ययन का दबाव समाप्त हो जाता है और मन को एक