Cracking moment in a singly reinforced concrete beam is equal to

Where $C r = 0.7 \sqrt{σ c l}$ and yt= distance of extreme tension fibre from the neutral axis

- 1
  
  $\frac{σ_{c r} I_{g}}{y t}$
- 2
  
  $\frac{σ_{c r} I_{g}}{\frac{1}{2 y t}}$
- 3
  
  $\frac{σ_{c r} I_{g}}{2 y t}$
- 4
  
  $\frac{2 σ_{c r} I_{g}}{y t}$

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