मोमबत्ती की चमक कम है।

A simple breakdown is:

• मोमबत्ती = candle
• की = of / possessive marker
• चमक = shine, brightness, glow
• कम = less, low, weak
• है = is

So the structure is basically:

[candle] + [of] + [brightness] + [low] + [is]

In natural English, that comes out as something like The candle’s brightness is low or The candle is dim.

की is the genitive marker, often corresponding to English of or ’s.

So:

• मोमबत्ती की चमक = the candle’s brightness
• literally, brightness of the candle

Hindi often links two nouns this way:

• राम की किताब = Ram’s book
• घर का दरवाज़ा = the door of the house
• मोमबत्ती की चमक = the candle’s brightness

No. This is a very common learner question.

In a phrase like X का/की/के Y, the का/की/के usually agrees with the following noun, not the possessor.

Here:

• possessor = मोमबत्ती
• possessed thing = चमक

Since चमक is feminine singular, Hindi uses की.

Compare:

• मोमबत्ती की चमक = the candle’s brightness
• मोमबत्ती का रंग = the candle’s color
  because रंग is masculine singular
• मोमबत्ती के रंग = the candle’s colors
  because रंग is plural

So की is here because of चमक, not because of मोमबत्ती.

Yes, चमक is feminine.

That matters because it affects the possessive marker:

• चमक → feminine singular → की

You do not always have to memorize a logical reason for noun gender in Hindi. Often, you just learn it together with the noun.

Here कम means low, less, or weak.

In this sentence it is describing the amount/degree of brightness: the brightness is low.

A useful point: कम often behaves as an indeclinable word, so it usually does not change for gender or number the way some adjectives do.

For example:

• रोशनी कम है = the light is low
• आवाज़ कम है = the sound is low
• मौके कम हैं = the opportunities are few

So even though चमक is feminine, कम stays कम.

Because standard Hindi word order is usually Subject/Topic + complement + verb, and the verb often comes last.

So:

• मोमबत्ती की चमक = the candle’s brightness
• कम = low
• है = is

Literally: The candle’s brightness low is.

That sounds odd in English, but it is normal in Hindi.

Hindi does not have articles like English a and the.

So मोमबत्ती can mean:

• a candle
• the candle

Which one is meant depends on context.

The same is true for the whole sentence. Depending on the situation, it could be understood as:

• The candle is dim
• A candle has low brightness
• The candle’s glow is weak

English forces you to choose an article, but Hindi usually does not.

Yes, it is understandable and natural enough, especially if you want to talk specifically about the candle’s brightness.

But Hindi also has other natural ways to express a similar idea, for example:

• मोमबत्ती कम चमक रही है। = The candle is not shining brightly.
• मोमबत्ती की रोशनी कम है। = The candle’s light is low.
• मोमबत्ती मंद है। = The candle is dim.
  This is more literary or formal in tone.

So मोमबत्ती की चमक कम है is fine, but it is one of several possible ways to say it.

They are related, but not identical.

• चमक = shine, brightness, sparkle, glow
• रोशनी = light, illumination

So:

• मोमबत्ती की चमक कम है focuses on the candle’s brightness/glow
• मोमबत्ती की रोशनी कम है focuses on the light it gives off

In many everyday situations, both would be understood similarly. But रोशनी is often the more common word if you are talking about how much light there is in a room.

Yes, and that changes the structure a little.

• मोमबत्ती की चमक कम है = The candle’s brightness is low.
• मोमबत्ती कम चमकती है = The candle shines less / The candle does not shine brightly.

The first sentence uses a noun phrase: brightness is low.
The second uses a verb: shines less.

Both are grammatical. The second may feel more action-based, while the first feels more descriptive.

A rough pronunciation guide:

• मोमबत्ती ≈ moam-but-tee
  More accurately: mom-bat-tee, with a doubled t sound because of त्त
• चमक ≈ chuh-muk
• कम ≈ kum
• है ≈ hai with a short diphthong, not like English hay exactly

A couple of helpful points:

• The त्त in मोमबत्ती is pronounced more strongly than a single त
• The short a in words like चमक and कम is often like a soft uh

In very casual speech, people do sometimes drop है, especially in context where the meaning is obvious.

So you may hear:

• मोमबत्ती की चमक कम

But in standard Hindi, especially in writing or careful speech, you should keep है:

• मोमबत्ती की चमक कम है।

For a learner, it is safest to include है unless you are very comfortable with colloquial speech patterns.

If you were talking about multiple candles, you could say:

• मोमबत्तियों की चमक कम है। = The candles’ brightness is low.

Here:

• मोमबत्ती becomes मोमबत्तियों in the oblique plural because it comes before की
• की still stays की because it agrees with चमक, which is still feminine singular
• है can remain singular if चमक is treated as one collective brightness, which is quite natural here

If you wanted to talk about multiple separate brightnesses, the sentence structure would likely be different.