Question

Why can’t we see some of the dimensions of string theory? (A) they are very dim...

Why can’t we see some of the dimensions of string theory? (A) they are very dim (B) there are too many of them (C) they are too far away (D) they are curled up very tightly (E) we can see all the dimensions

How many dimensions does string theory demand? (A) just 4 (B) 10 or 11 (C) 25 or 26 (D) Avogadro’s number (E) an infinite number

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Answer #1

# we can't see some of the dimensions of string theory because (D) they are curled up very tightly.

Explanation:-

The other dimensions which are not visible are very tiny and they can only be visible at plank range( the range where we can see an object of 10-45 m ). So they are curled up in a very little space which ia beyond our visibility range.

## String theory demands (B) 10 or 11 dimensions.

N.B:- Current versions of string theory requires 10 dimensions total, while even an more hypothetical string theory , known as M- theory requires 11 dimensions.

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