2026 WAEC GCE PHYSICS QUESTIONS AND ANSWERS ESSAY & OBJ SECOND SERIES EXAM
Answers From 1 to 12:
(2a)
A hologram is a three-dimensional image produced by recording and reconstructing the light waves scattered from an object, usually with the aid of laser light.
(2b)
(PICK ANY TWO)
(i) Three-dimensional appearance: A holographic image appears to have height, width and depth.
(ii) Depth perception: It gives the viewer a sense of distance between different parts of the image.
(iii) Parallax effect: The image appears different when viewed from different angles.
(iv) Realistic appearance: It can closely resemble the original object in shape and appearance.
(v) No conventional lens image required: A hologram records light-wave information rather than simply recording an ordinary photograph of the object.
(vi) Light-dependent visibility: The holographic image must be illuminated appropriately to be seen clearly.
(vii) Image reconstruction: The original object’s appearance can be reconstructed from the recorded interference pattern using suitable illumination.
(viii) Multiple viewing angles: Different perspectives of the object can be observed by moving the viewer’s position.
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(4)
(PICK ANY THREE)
(i) Monochromatic.
(ii) Coherent.
(iii) Highly directional.
(iv) High intensity.
(v) Highly collimated.
(vi) Can be focused to a very small spot.
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