Now-a-days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps ?

Now-a-days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps ? Correct Answer Sodium

A sodium-vapour lamp is a gas-discharge lamp that uses sodium in an excited state to produce light. There are two varieties of such lamps: low pressure and high pressure. Low-pressure sodium lamps are the most efficient electrical light sources, but their yellow light restricts applications to outdoor lighting such as street lamps. High-pressure sodium lamps have a broader spectrum of light but poorer colour rendering than other types. Because sodium vapour lamps cause less light pollution than mercury-vapour lamps, many cities that have large astronomical observatories employ them.
Bissoy MCQ

Related Questions

Streets A, B, and C are straight and level, and they intersect to form a triangle. If streets A and B intersect at a 60 degree angle and if street C is perpendicular to street B, at what acute angle do street A and C intersect?
Leave Interstate 25 at exit 7S. Follow that road (Elm Street) for two miles. After one mile, you will pass a small shopping centre on your left. At the next next set of traffic lights, turn right onto Maple Drive. Erik's house is the third house on your left. It's number 33, and it's white with green trim. Select the best answer: Which is closest to Erik's house?
Leave Interstate 25 at exit 75 . Follow that road (Elm Street ) for two miles . After one mile ,you will pass a small shopping center on your left . At the next set of traffic lights, turn right onto Maple Drive . Driks house is the third house on your left . It's number 33, and i'ts write with green trim. What is Drik's address?
We kept in touch with the authorities, _____ some of the street lights were broken in our neighborhood-
I used to travel frequently. Which one is the closest in meaning to "frequently"
Sodium vapour lamps glow with yellow colour. This is due to
It is one street when the sun is shining another street in rain, and another under the full moon. How many streets are mentioned here
On a street with 25 house , 10 house have fewer than 6 rooms , 10 houses have more than 7 rooms and 5 houses have more than 8 rooms . What is the total number of hoses on the street that are either 6,7 or 8 room houses?
On a street with 30 house, 10 house have fewer than 4 rooms 14 houses have more than 5 rooms and 6 houses have more than 6 rooms what is the total number of hoses on the street that are either 4, 5 or 6 room houses?
A jar contains only marbles of three colors : red, green and yellow. The red and green marbles are in the ratio of 2 : 5 and the yellow and red marbles are in ratio of 5 : 6. which of the following could be the total number of marbles?