M5 - Quiz 2-midterm proper

The rate at which light energy is emitted from a luminous source

• luminous flux

• illuminance

• luminous intensity

• luminous sources

The luminous flux falling on a given surface area at any instant

• luminous flux

• illuminance

• luminous intensity

• luminous sources

The speed of light in a vacuum constant value would be:

• 3 x 10^8 m/s

• 328 m/s

• 338 m/s

• 8 x 10^3 m/s

__________ can be formed by adding red, green, and blue light in equal amount:

• orange light

• black light

• rainbow light

• white light

A light ray that strikes a boundary and is reflected in the same or opposite direction is also known as:

• refracted ray

• reimburse ray

• reflected ray

• rejected ray

A light ray that strikes a boundary and is deflected and might change direction from normal line is also known as:

• reimburse ray

• reflected ray

• refracted ray

• rejected ray

The bending of light as it passes the edges of a barrier is called: ____________

• refraction

• reflection

• diffraction

• dilllution

______________ is the production of light with a specific pattern of oscillation.

• polarization

• assimilation

• synthesize

• emission

Solve for illuminance "E" if; luminous flux (P) = 2050 lm and distance (r) = 2.8 m

• 58.27 lx

• 20.81 lx

• 5740 lx

• 732.14 lx

Solve for illuminance "E" if; luminous intensity (candela) = 55 cd and distance (r) = 3.4 m

• 4.76 lx

• 25.72 lx

• 187 lx

• 16.17 lx