91. What is the SI unit for illuminance?
a) lumen
b) candela
c) lux
d) watt
Answer: c) lux
92. What is the SI unit for luminous flux?
a) lumen
b) candela
c) lux
d) watt
Answer: a) lumen
93. What is the SI unit for frequency?
a) hertz
b) meter/second
c) radian/second
d) newton
Answer: a) hertz
94. What is the SI unit for pressure?
a) pascal
b) newton
c) joule
d) watt
Answer: a) pascal
95. What is the SI unit for torque?
a) kilogram
b) meter/second
c) newton
d) newton-meter
Answer: d) newton-meter
