what is the total magnification of a specimen viewed with a 10x ocular lens and a 45x objective lens?

Answer

450x

Q: What is the magnification of the ocular lens? A: The magnification of the ocular lens is 10x.
Q: What is the magnification of the objective lens? A: The magnification of the objective lens is 45x.
To calculate the total magnification, multiply the magnification of the ocular lens by the magnification of the objective lens.