Physics deals with a wide variety of systems, some of its theories were experimentally tested numerous times and found correct as an approximation of nature (within a certain domain of validity). Physics also makes significant contributions through advances in new technologies that arise from theoretical breakthroughs. Some of the day to day useful things of modern-day society, such as television, computers, domestic appliances, and nuclear weapons; advances in thermodynamics are due to the development in the field of physics
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What causes Nuclear fission ?CorrectIncorrect
Which of the following is used as a coolant in nuclears reactors ?CorrectIncorrect
Which of the following is good nuclear fuel ?CorrectIncorrect
What is the wavelength of visible spectrum ?CorrectIncorrect
Why is enormous energy is released in an atomic explosion?CorrectIncorrect
Which of the following statements are correctly associated with ultrasonic waves ?
1.These are the acoustic waves of frequencies more than 20,000 Hertz.
2.When possible to use, these waves are preferred over X-rays for getting an image of internal organs because they are not harmful.
3.Their velocity is more than the velocity of sound.CorrectIncorrect
Which of the following has the least penetrating power?CorrectIncorrect
Optic fibres are mainly used for which of the following?CorrectIncorrect
Which of the following are most penetrating?CorrectIncorrect
Which of the following can read Old –written material, which cannot be read easily?CorrectIncorrect