IGCSE Units

Question 1

Length (l), Height (h), Distance (d)

Answer 1

m (or km, cm, mm)

Question 2

Area (A)

Answer 2

m² (or cm²)

Question 3

Volume (V)

Answer 3

m³ (or dm³, cm³)

Question 4

Weight (W)

Answer 4

N

Question 5

Time (t)

Answer 5

s (or min, h, ms)

Question 6

Density (d or ρ)

Answer 6

kg/m³ or g/cm³

Question 7

mass (m)

Answer 7

kg (or g, mg)

Question 8

speed (s)

Answer 8

m/s (or km/h, cm/s)

Question 9

Velocity (u = initial velocity v = final velocity)

Answer 9

m/s (or km/h, cm/s)

Question 10

acceleration (a)

Answer 10

m/s²

Question 11

acceleration of free fall or gravity (g) g = 10 on earth

Answer 11

m/s²

Question 12

Force (F)

Answer 12

N

Question 13

Work Done (W)

Answer 13

J

Question 14

Energy (E)

Answer 14

J

Question 15

Power (P)

Answer 15

W

Question 16

Pressure (P)

Answer 16

Pa (or N/m² or N/cm²)

Question 17

Temperature (T)

Answer 17

°C

Question 18

Specific Heat Capacity (c)

Answer 18

J/(kg°C)

Question 19

Frequency (f)

Answer 19

Hz

Question 20

Wavelength (λ)

Answer 20

m (or cm)

Question 21

Focal Length (f)

Answer 21

cm or mm

Question 22

Angle of incidence (i)

Answer 22

degree (°)

Question 23

Angle of refraction (r)

Answer 23

degree (°)

Question 24

Angle of reflection (r)

Answer 24

degree (°)

Question 25

Critical Angle (c)

Answer 25

degree (°)

Question 26

potential difference / voltage (V)

Answer 26

V (or mV)

Question 27

Current (I)

Answer 27

A (or mA)

Question 28

Charge (Q)

Answer 28

C(or As)

Question 29

E.m.f. (E)

Answer 29

V

Question 30

Resistance (R)

Answer 30

Ω