WAEC 2022/2023 Physics Practical Questions and Answers is out

WAEC 2022 Physics practical questions and answers is now available

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PHYSICS OBJ

1-10: BCABBDDACA

11-20: CABCBDBDBD

21-30: ABCCBBAADA

31-40: BCDBCBACDA

41-50: DACBDDDBAA

Completed.

WAEC Physics Practical Theory Answers 2022/2033

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No (1)

Range /PQ/ = u²sin2θ/g

u = 250ms-¹

θ =42°

= [250² x sin(2x42°)]/10

= (62,500 x sin84°)/10

= 6250 x 0.9945

= 6215.63m

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(2)

(i) They are pure semiconductors with impurities less than 1 and have teravalent crystals

(ii) Presence of mobile charge carriers is intrinsic property of material

(iii) No doping or addition of impurities required.

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(4)

F = 50N

k = 100Nm-¹

F = ke

50 = 100e

e = 50/100 = 0.5m

Work done = (1/2)ke²

= 1/2 x 100 x 0.5²

= 25/2

= 12.5joules

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No (5a)

A geostationary satellite is an earth orbiting satellite placed at an altitude of approximately 35,800km directly over the equator that revolves in the same direction which the earth rotates.

(5b)

(i) Gas lasers

(ii) Solid-state lasers

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(5a)

A geostationary satellite is an earth-orbiting satellite, placed at an altitude of approximately 35,800 kilometers (22,300 miles) directly over the equator, that revolves in the same direction the earth rotates (west to east).

(5b)

(i) Gas Lasers

(ii) Solid-State Lasers