1. which part of the microscope provides concentration of light coming out of a light source? a. oculars
b. objective
c. condenser
d. light bulbs on/off switch
e. none of the above

2. what is the total magnification of the cells when using the immersion objective of bright field microscope?
a. 40
b. 10
c. 100
d. 400
e. none of the above

3. the role of the immersion oil is to___
a. prevent the loss of light by refraction
b. make objective gentle touching a slide
c. magnify 1000x
d. concentrate light coming from the bulb
e. none of the above

1. C. Condenser

2. C. 100

3. d. concentrate light coming from the bulb

Explanation:

The Condenser is the part of a microscope that helps to condense the light rays thereby making the visuals clearer and more efficient. This is possible by the increase in concentration of the rays .

The total magnification of the cells when using the immersion objective of bright field microscope is 100x.

The role of the immersion oil is to concentrate light coming out from the bulb

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.