Physical Quantities and Measurement PHYSICS - Physical Quantities and Measurement

• A
  $150 m s ^{-1}$
• ✓
  $2.5 m s ^{-1}$
• C
  $25 m s ^{-1}$
• D
  $9 m s ^{-1}$

Answer: B.

• A
  Speed = distance x time
• ✓
  speed = distance / time
• C
  speed = time / distance
• D
  speed = 1 / distance x time

Answer: B.

• A
  60.8 g
• B
  75 g
• ✓
  48 g
• D
  0.013 

Answer: C.

• A
  both will be same
• B
  aluminium will be less than that of brass
• ✓
  aluminium will be more than that of brass
• D
  nothing can be said.

Answer: C.

• A
  $0.8 kg m ^{-3}$
• B
  $0.0008 kg m ^{-3}$
• ✓
  $800 kg m ^{-3}$
• D
  $8 \times 10^3 kg m ^{-3}$

Answer: C.