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9th Grade > Physics

WORK AND ENERGY MCQs

Total Questions : 131 | Page 5 of 14 pages
Question 41. Natural processes such as volcanic eruptions, forest fires causes
  1.    water pollution
  2.    nuclear pollution
  3.    traffic pollution
  4.    air pollution
 Discuss Question
Answer: Option D. -> air pollution
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 42. The energy coming from the sun for the last billion years is the result of a
  1.    heat reactions
  2.    nuclear reactions
  3.    molecular reactions
  4.    potential reaction
 Discuss Question
Answer: Option B. -> nuclear reactions
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 43. The energy released in the form of nuclear radiations in addition to heat and light during nuclear reactions is known as
  1.    chemical energy
  2.    nuclear energy
  3.    heat energy
  4.    electrical energy
 Discuss Question
Answer: Option C. -> heat energy
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 44. (Force × displacement) is equal to
  1.    distance
  2.    work
  3.    momentum
  4.    inertia
 Discuss Question
Answer: Option B. -> work
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 45. The power of the pump when it can lift 70 kg of water through 16 m in 10 s is
  1.    100 W
  2.    1120 W
  3.    1000 W
  4.    2000 W
 Discuss Question
Answer: Option B. -> 1120 W
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 46. Anna carries a 12 kg bag upstairs to a height of 15 steps. The amount of work she has done is
  1.    360 J
  2.    270 J
  3.    250 J
  4.    290 J
 Discuss Question
Answer: Option B. -> 270 J
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 47. The energy obtained from electric cells and batteries as a result of a chemical reaction is called
  1.    chemical energy
  2.    nuclear energy
  3.    heat energy
  4.    electrical energy
 Discuss Question
Answer: Option D. -> electrical energy
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 48. The interconversion of matter and energy is predicted by
  1.    Newton
  2.    Einstein
  3.    Jobst Burgi
  4.    Abu Jafar
 Discuss Question
Answer: Option B. -> Einstein
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 49. When a body is lifted through a height h, the work done on it appears in the form of its
  1.    kinetic energy
  2.    potential energy
  3.    chemical energy
  4.    geothermal energy
 Discuss Question
Answer: Option B. -> potential energy
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 50. The change in the quality of the environment that can be harmful to living things is called
  1.    power
  2.    energy conversion
  3.    pollution
  4.    none of above
 Discuss Question
Answer: Option C. -> pollution
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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