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WAEC 2026 Physics Questions and Answers

 

WAEC PHYSICS ANSWERS

PHYSICS OBJ:
1-10: DBDCABDDBC
11-20: ACABCBCCDB
21-30: DABACDABCB
31-40: ACBAADADCD
41-50: ACBBCBAABA

 

(1a)
(PICK ANY ONE)
Diffusion is the spontaneous movement and mixing of particles of one substance with the particles of another substance due to their continuous random motion.

OR

Diffusion is the movement of particles from one place to another as a result of their random motion until they become uniformly distributed.

OR

Diffusion is the process by which particles of a substance move from a region of higher concentration to a region of lower concentration until they are evenly distributed.

(1b)
(PICK ANY TWO)
(i) Diffusion
(ii) Brownian motion
(iii) Osmosis
(iv) Dissolution of substances
(v) Expansion and contraction of matter
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(2ai) Holes
(2aii) Electrons

(2b) (PICK ANY ONE)
(i) It does not require heating before operation.
(ii) It consumes less power.
(iii) It is smaller in size.
(iv) It produces less heat.
(v) It is more efficient.
(vi) It has a longer lifespan.
(vii) It is more rugged and less fragile.
(viii) It starts working instantly without warm-up time
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NUMBER 3

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(4) (PICK ANY THREE)
(i) A solar energy collector converts solar energy into useful heat, while a black body only absorbs radiation.
(ii) A solar energy collector is a practical device, while a black body is an ideal object.
(iii) A solar energy collector reduces heat loss, while a black body is a perfect absorber and emitter of radiation.
(iv) A solar energy collector usually has a transparent cover and insulation, while a black body does not.
(v) A solar energy collector is used for heating water or air, while a black body is mainly used in radiation studies.
(vi) A solar energy collector absorbs mainly solar radiation, while a black body absorbs all wavelengths of incident radiation.
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NUMBER 5

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6a)
A hard magnetic material is a material that is difficult to magnetize but, once magnetized, it retains its magnetism for a long time and is not easily demagnetized.

Examples: steel, cobalt steel, and Alnico.

(6b)
*PICK ANY ONE*
(I) Diffusion – e.g. perfume spreading through air.
(ii) Brownian motion – random movement of tiny particles suspended in a fluid.
(iii) Osmosis – movement of solvent particles through a semi-permeable membrane.

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NUMBER 7

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NUMBER 8

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NUMBER 10

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NUMBER 11

CORRECTED