A rectangular glass block 5cm thick is placed on top of the page of a book. If the refractive index of the glass block is 1.53,calculate apparent depth of the letters on the book.
To calculate the apparent depth of the letters on the book, we can use the following formula for apparent depth in a transparent medium:
Apparent Depth = Real Depth / Refractive Index
Given that the glass block is 5cm thick and has a refractive index of 1.53, the real depth of the book (in this case, the height of the letters) is equal to the thickness of the glass block, which is 5cm.
Therefore, the apparent depth of the letters on the book is:
Apparent Depth = 5cm / 1.53 = 3.27cm
So, the apparent depth of the letters on the book is 3.27cm.