EXAMIANS
Which lamp has the best Colour Rendering Index (CRI)?
YOUR ANSWER : ?
YOUR ANSWER : ?
A 200 candle power lamp is hung 4 m above the centre of circular area of 5 m diameter. The illumination at centre of the area is
YOUR ANSWER : ?
Candela is the unit of which?
YOUR ANSWER : ?
The illumination of the surface varies directly with cosine of the angle between normal to surface and direction of the inclined light is given by
YOUR ANSWER : ?
Candela/metre square is the unit of which photometric quantity?
YOUR ANSWER : ?
Which lamps can be directly connected to a solar cell?
YOUR ANSWER : ?
The solid angle subtended by an area of 2400 cm2 on the surface of a sphere of diameter 1.2 m is
YOUR ANSWER : ?
Which lamp is best suited for lighting an International sports arena?
YOUR ANSWER : ?
What will be the number of lamps, each having 300 lumens, required to obtain an average illuminance of 50 lux on a 4m × 3m rectangular room?
YOUR ANSWER : ?
Solid angle is expressed in terms of
YOUR ANSWER : ?