Q. 113 C5.0( 2 Votes )

Sunscreens block harmful ultraviolet (UV) rays produced by the sun. Each sunscreen has a Sun Protection Factor (SPF) that tells you how many minutes you can stay in the sun before you receive one minute of burning UV rays. For example, if you apply sunscreen with SPF 15, you get 1 minute of UV rays for every 15 minutes you stay in the sun.

A label on a sunscreen with SPF 30 claims that the sunscreen blocks about 97% of harmful UV rays. Assuming the SPF factor is accurate, is this claim true? Explain.

Answer :

Given, sunscreen with SPF 30

And claims 97% of UV rays are blocked by the sunscreen.

Need to find out given claim is true or not.

The given claim is False


According to the claim, for affect of UV rays 1 minute = SPF

Affect 30SPF claim

Hence, the claim is false.

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