Home
Class
SCIENCE
NCERT | Work and energy in one shot Clas...

NCERT | Work and energy in one shot Class 9 Physics Hindi Medium | Doubtnut | By Subhadra Ma'am

Promotional Banner

Similar Questions

Explore conceptually related problems

Read the following passages carefully and answer the questions that follow. In spite of all the honours that we heaped upon him, Pasteur, as has been said, remained simple at heart. Perhaps the imagery of his boyhood days, when he drew the familiar scenes of his birthplace and the longing to be a great artist, never wholly left him. In truth he did become a great artist, though after his sixteenth year he abandoned the brush forever. Like every artist of worth, he put his whole soul and energy into his work and it was this very energy that in the end wore him out. For to him, each sufferer was more than just a case that was to be cured. He looked upon the fight against hydrophobia as a battle and he was absorbed in his determination to win. The sight of injured children, particularly, moved him to an indescribable extent. He suffered with his patients and yet he would not deny himself a share in that suffering. His greatest grief was when sheer physical exhaustion made him give up his active work. He retired to the estate at Villeneuve Etang, where he had his kennels for the study of rabies and there he passed his last summer, as his great biographer, Vallery Robot, has said, "practicing the gospel virtues." The attitude of this man to the Science, he had done so much to perfect, can be best summed up in a sentence that he is reputed once to have uttered, concerning the materialism of many of his contemporaries in similar branches of learning to his own: "the more I contemplate the mysteries of nature, the more my faith becomes like that of a peasant." But even then, in retirement he loved to see his former pupils, and it was then he would reiterate his life's principles: 'Work,' he would say, “never cease to work.” He passed as simply as a child, the greatest man France had ever produced, derived from a plebiscite among the French people. Napoleon, the idol of France was placed fifth. No greater tribute could have been given to Louis Pasteur, the tanner's son, the scientist, the man of peace and the patient worker for humanity. Give one word for the phrase-Vote by the people of the country to decide a matter of national importance.

Class 10 Physics Complete All Chapters in One Video⚔️Complete Physics in One Shot

Class 11 NEET 2020 - Revision In 30 Days | Work Power Energy - Quick Revision | NEET Physics | Important Questions

In a class of 75 students, the number of students studying different Subjects are 43 in Mathematics 44 in Physics, 39 in Chemistry, 32 in Mathematics and Physics, 29 in Mathematics and Chemistry 27 in Physics and Chemistry and 24 in all three subjects. The number of students who have taken exactly one subject is

In a class of 55 students, the number of students studying different subjects are 23 in Mathematics, 24 in Physics, 19 in Chemistry, 12 in Mathematics and Physics, 9 in Mathematics and Chemistry, 7 in Physics and Chemistry and 4 in all the three subjects. Find the number of students who have taken exactly one subject.

Scienists are working hard to develop inclear fusion reactor Nocies of heavy hydrogen, _(1)^(2)H , known as deuteron and denoted by D , can be thought of as a candidate for fusion rector . The D-D reaction is _(1)^(2) H + _(1)^(2) H rarr _(2)^(1) He + n+ energy in the core of fasion reactor a gas of heavy hydrogen of _(1)^(2) H nucles and electrons is know as plasma . The nuclei move randonity in the reactor to take place Unally , the temperature in the reactor core are too ligh and to natrual will can be used to confine the to pleama for a time l_(0) before the particles by away from the case if n is the denasity (number volume ) of determines , the product nt_(0) is called Lavson number in one of the criteria , a reactor is termed successful if Lawson number is greater then 5 xx 10^(14) s//cm^(2) it may be helpfull to use the following botczmann constant lambda = 8.6 xx 10^(-5)eV//k, (e^(2))/(4 pi s_(0)) = 1.44 xx 10^(-9) eVm Assume that two deuteron nuclei in the core of fasion reactor at temperacture energy T are moving toward each other, each with kinectic energy 1.5 kT , whenn the seperation between them is large enogh to leglect coulomb potential energy . Also neglate any interaction from other particle in the core . The minimum temperature T required for them to reach a separation of 4 xx 10^(-15) m is in the range

In a certain college at the B.Sc. examination, 3 candidates obtained first class honours in each of following subjects: Physics, Chemistry and Maths, no candidates obtaining honours in more than one subject Number of ways in which 9 scholarships of different value be awarded to the 9 candidates if due regard is to be paid only to the places obtained by candidates in any one subject is

(a) What is the difference between gravitational potential energy and elastic potential energy ? Give one example of a body having gravitational potential energy and another having elastic potential energy. (b) If 784 J of work was done in lifting a 20 kg mass, calculate the height through which it was lifted. ( g = 9.8 m//s^(2) )

Recommended Questions
  1. NCERT | Work and energy in one shot Class 9 Physics Hindi Medium | Dou...

    Text Solution

    |

  2. नाइट्रो बेंजीन का प्रबल अम्लीय माध्यम में अपचयन करने पर अंतिम उत्पाद ब...

    Text Solution

    |

  3. नाइट्रोबेंजीन का उदासीन माध्यम में अपचयन कराने पर प्राप्त होता है -

    Text Solution

    |

  4. सरीसृप तथा पक्षी वर्ग को जोड़ने वाली कड़ी का नाम लिखिए!

    Text Solution

    |

  5. एक चालक में 50 वोल्ट पर 2 mA धारा तथा 60 वोल्ट पर 3 mA धारा ...

    Text Solution

    |

  6. साइक्लोट्रॉन किस सिद्धान्त पर कार्य करता है?

    Text Solution

    |

  7. एक प्रोटॉन तथा एक alpha - कण समान गतिज ऊर्जा के समान चुम्बकीय क्षेत्र ...

    Text Solution

    |

  8. रेलवे के आधे टिकट का मूल्य पूरे किराये का आधा तथा आरक्षण व्यय पूरे टिक...

    Text Solution

    |

  9. एक राजमार्ग पर दो बिन्दु A और B एक दूसरे से 90 किमी की दूरी पर है। एक ...

    Text Solution

    |