Directions : The question is based on the pie chart given below.Constituents of Sunrays received in 1 minute.

Total sunrays received in 1 minute = 3600 units.

How many minutes of exposure to the sun in a day would be enough to ensure that the body receives enough amount of Vitamin D,  given that the body requires 40 units of Vitamin D every day and that 30 units of Beta rays generate in 1 unit of Vitamin  D?

  • Option 1)

    \dpi{80} 7\frac{2}{3}

  • Option 2)

    5\frac{1}{3}

  • Option 3)

    5\frac{2}{3}

  • Option 4)

    6\frac{2}{3}

  • Option 5)

    6\frac{1}{3}

Answers (1)

1 unit vitamin D = 30 units of beta ray

 So 40 units of vitamin D = 40 x 30 = 1200 unit

Since in 1 unit 180 unit of beta ray is received

So for 1200 unit = \frac{1200}{180}=6\frac{2}{3}

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