I up the missing letter in the blanks. Clue is provided for each number
1. _ _S_P_ec- - it is where the objectives are placed.
2. d
C_nd_ _c_r - used to collect and focus the light on the specimen.
3. __c_l _r - a. k. a eyepiece.
4. S _ _ _ e -it is where the specimen is placed. 5. _ia_h_ _g _- - controls the amount of light reaching the specimen.​