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9th Grade > Physics

MATTER PROPERTIES PHYSICS MCQs

Total Questions : 90 | Page 4 of 9 pages
Question 31. The Earth is surrounded by a cover of air called
  1.    gravity
  2.    energy
  3.    ozone
  4.    atmosphere
 Discuss Question
Answer: Option D. -> atmosphere
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 32. The force acting on the unit area on the surface is called
  1.    strain
  2.    pressure
  3.    stress
  4.    density
 Discuss Question
Answer: Option C. -> stress
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 33. A boat of 8 meters and 40 meter long floats on water. If 125000 N of cargo is added, it will sink
  1.    10 cm
  2.    4 cm
  3.    15 cm
  4.    20 cm
 Discuss Question
Answer: Option B. -> 4 cm
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 34. (Density/mass) is equal to
  1.    power
  2.    area
  3.    energy
  4.    volume
 Discuss Question
Answer: Option D. -> volume
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 35. During cold chilly nights, the atmospheric pressure is
  1.    decreased
  2.    remains constant
  3.    becomes zero
  4.    increased
 Discuss Question
Answer: Option D. -> increased
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 36. The density of metal spoon when its weight in air is 0.48 N and in water is 0.42 N is
  1.    1000 kg m-3
  2.    4000 kg m-3
  3.    6000 kg m-3
  4.    8000 kg m-3
 Discuss Question
Answer: Option D. -> 8000 kg m-3
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 37. If stress produces a change in the length of an object then the strain is termed as
  1.    zero strain
  2.    constant strain
  3.    former strain
  4.    tensile strain
 Discuss Question
Answer: Option D. -> tensile strain
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 38. The instruments that measure atmospheric pressure are called
  1.    beam balance
  2.    thermometers
  3.    barometers
  4.    screw gauge
 Discuss Question
Answer: Option C. -> barometers
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 39. If the length of wire is 1 m and cross-sectional area 5×10-5 m², when the wire stretched through 1 mm by a force of 10,000 N. The Young's modulus of the wire would be
  1.    2×10² Nm-²
  2.    2×10⁹ Nm-²
  3.    2×10⁸ Nm-²
  4.    2×10¹¹ Nm-²
 Discuss Question
Answer: Option D. -> 2×10¹¹ Nm-²
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 40. The pressure is defined as the force acting per unit
  1.    volume
  2.    density
  3.    area
  4.    mass
 Discuss Question
Answer: Option C. -> area
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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