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NEET PHYSICSEasy

One yard in SI units is equal to:

A

1.9144 metre

B

0.9144 metre

C

0.09144 kilometre

D

1.0936 kilometre

Step-by-Step Solution

  1. Identify the Unit: The 'yard' is a unit of length in the Imperial and US customary systems.
  2. Conversion to SI: The SI unit of length is the metre (m).
  3. Conversion Factors:
  • 1 yard = 3 feet.
  • 1 foot = 12 inches.
  • 1 inch = 2.54 cm (exactly).
  • Therefore, 1 yard = 3×12×2.543 \times 12 \times 2.54 cm = 91.44 cm.
  1. Final Calculation: Converting centimetres to metres (1 cm=10−2 m1 \text{ cm} = 10^{-2} \text{ m}): 1 yard=91.44×10−2 m=0.9144 m1 \text{ yard} = 91.44 \times 10^{-2} \text{ m} = 0.9144 \text{ m}
  2. Source Verification: NCERT Appendices explicitly state: 1 yard=36 inches=0.9144 metre1 \text{ yard} = 36 \text{ inches} = 0.9144 \text{ metre} , .
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