Class X

When pivot is adjusted at 50 cm in a meter rule, rule will
  1. Be balanced
  2. Fall
  3. Be unbalanced
  4. Turn slowly
 Negative acceleration is also known as
  1. Retardation
  2. Relaxation
  3. Escalation
  4. All of above
Formula for specific heat capacity is
  1. h = Δθ/m, where m is mass
  2. q = m/Δθ where m is mass
  3. c = 1/h(Δθ)
  4. c = 1/m(Q/Δθ)
Specific heat capacity of mercury is
  1. 120 J kg-1 °C-1
  2. 140 J kg-1 °C-1
  3. 160 J kg-1 °C-1
  4. 180 J kg-1 °C-1
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