Optical Instruments - Jamb Physics Past Questions and Answers

Question 21:

• JAMB 2007

When an object is placed between the principal focus and the optical center of a convex lens, it could be used as a?

A. Simple microscope
B. Refecting lens
C. Compound microscope
D. Projector

Question 22:

• JAMB 2008

In the microscope, the eyepiece lens merely acts as?

A. An inverter
B. A refiner
C. A diminisher
D. A magnifier

Question 23:

• JAMB 2008

An observer with normal eyes views an object with magnifying glass of focal length 5 cm. the angular magnification is?
[least distance of distinct vision D = 25 cm]

A. -6
B. -5
C. 5
D. 6

Question 24:

• JAMB 2009

The ability of the human eye to focus object on the retina is referred to as the power of

A. Interference
B. Diffraction
C. Accomodation
D. Superposition

Question 25:

• JAMB 2010

In comparing the camera and the human eye, the film of the camera function as the

A. Retina
B. Iris
C. Cornea
D. Pupil