It is the innermost layer of the eye and contains the light sensitive cells.

This part of the eye changes the thickness of lens to bring image of the object in retina

It is a transparent membrane that bends the light rays as they enter the eye.

The visible portion of the electromagnetic spectrum includes all wavelengths between .....

The following are the factors that can be controlled in a design of a lighting system except...

Techniques in lighting direction to reduce shadows on an object caused by the key light.

Enhances any variations in surface depth, revealing texture.

It is defined as the flow of light.

The ratio of luminous flux and power it received in watts is called.

The amount of luminous flux incident over the are in square feet is called

It is the density of luminous flux incident over a surface.

Recommended level for stairways in footcandle.

Recommended level for reading no.3 pencil in lux

The brightness of an illuminated surface as perceived by the human eye

The ration between the luminous flux emitted by the luminaire and the luminous flux of the lamp installed in the luminaire

If the surface is illuminated to 50 lux and is twisted through an angle of 36.87 degrees, the illuminance will fall to...

A certain light emitted 25,000 candelas is aimed at a point directly under the light at a height of 50 meters. what is the Illumination at that point?

A piece of paper lies on floor 3m away from a point directly below a bulb of 200cd and is 4m above the floor. What is the illumination on the center of the paper in lux

Suppose that the luminous flux within the cone is one lumen, and that it strikes a surface 5 meters away. It will produce an illuminated area of_____

Process of producing magnetism out of electricity

They support the field or exciting coils

It houses the conductors in the slot.

It carries the whole armature assembly

An important part of DC Machines which connects the rotating armature conductors to the stationary external circuit through brushes.

Light made up of __________ particles that travel waves.

All of the following can control the glare, EXCEPT

The step could be taken to improve ambient illumination is __________.

What is the S.I unit of luminous intensity? ?

Which term refers that the flow of light into a plane surface?

Which lighting technique is used to create a soft, diffused light that reduces harsh shadows?

What is the S.I unit of illuminance?

The phenomenon where light bends as it passes through different mediums is known as?