Microscopy Principle And Application

A) 11 cm

B) 25 cm

C) 32 cm

D) 4 2 cm

A) Wavelength of light used

B) Numerical aperture of lens system

C) Refractive index

D) Wavelength of light used and numerical aperture of lens system

A) 0.65

B) 0.85

C) 1.33

D) 1.00

A) Constant

B) Inversely proportional to their refractive indices

C) Directly proportional to their refractive indices

D) Exponentially related to their refractive indices

A) electron beams

B) magnetic fields

C) light waves

D) electron beams and magnetic fields

A) 400,000X

B) 100,000X

C) 15000X

D) 100X

A) specimen should be thin and dry

B) image is obtained on a phosphorescent screen

C) electron beam must pass through evacuated chamber

D) specimen should be thin and dry, image is obtained on a phosphorescent screen and electron beam must pass through evacuated chambe

A) virus particles

B) protein molecules

C) bacterial flagella

D) virus particles, protein molecules and bacterial flagella

A) cathode ray tube

B) phosphorescent screen

C) anode

D) scanning generator

A) Negative-Staining

B) Shadow Casting

C) Ultrathin Sectioning

D) Negative-Staining, Shadow Casting, Ultrathin Sectioning, Freeze-Etching