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WAEC Physics

Page 4

Thermal energy added or removed from a substance that changes the state of the substance is called

a.

latent heat

b.

heat of reaction

c.

calorimetry

d.

specific heat

The nucleon number of an atom is the total number of

a.

electrons and protons

b.

electrons and neutrons

c.

neutrons minus electrons

d.

protons and neutrons

The ice point on the absolute scale of temperature is

a.

O K

b.

32 K

c.

100 K

d.

273K

Two plane mirrors are inclined at an angle of 20° to each other. Determine the number of images formed when an object is placed between them.

a.

17

b.

18

c.

19

d.

20

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