Question R3 Q1 - NSB Single Elimination 2008

When using a compound light microscope, which of the following is the proper procedure for focusing?

W) begin with a low power objective and use only course focus when using the high power objective

X) begin with a high power objective and use only fine focus when using the low power objective

Y) begin with a low power objective and use only fine focus when using the high power objective

Z) begin with a high power objective and use only course focus when using the low power objective

Science Bowl Question