Lakshya Education MCQs

Question: Which among the following is the fundamental quantity ?
Options:
A.Volume
B.Time
C.Velocity
D.Force
Answer: Option B

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Question 1. A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or touching the bottom of the bucket. The reading of the spring balance
  1.    Will increase
  2.    Will decrease
  3.    Does not change
  4.    Varies with the increase of depth of the immersion of the iron piece
Answer: Option A
Question 2. 1 amu is equivalent to
  1.    1 eV
  2.    931 eV
  3.    931 KeV
  4.    931 MeV
Answer: Option D
Question 3. 1 m/s equals ________ km/hr
  1.    5/16
  2.    16/5
  3.    18/5
  4.    5/18
Answer: Option C
Question 4. Magnetic keepers are used to protect magnets from :
  1.    Earth's magnetic field
  2.    Effect of other magnets
  3.    Self-demagnetization
  4.    Demagnetization due to heating
Answer: Option C
Question 5. A freely suspended magnet remains horizontal at
  1.    The magnet equator
  2.    The magnetic north pole
  3.    The magnetic south pole
  4.    The geographic pole
Answer: Option A
Question 6. A permanent magnet can affect
  1.    Magnets
  2.    Electromagnets
  3.    Both A & B
  4.    None of the above
Answer: Option C

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