- (A) Five
- (B) Six
- (C) Seven
- (D) Eight
_______ is considered the largest glacier of Pakistan.
March 18, 2026
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- (A) Siachen Glacier
- (B) Tirich Mir Glacier
- (C) Biafo Glacier
- (D) Hispar Glacier
How many colours are there in light spectrum?
How many colours are there in light spectrum?
Seven colours make up what we see as visible light - red, then orange, followed by yellow, after that green, alongside blue, next comes indigo, finally violet. Isaac Newton helped spread this idea, picking seven because it matched the seven tones in music scales. Even though colour blends without clear breaks across an endless mix of shades, people still use ROYGBIV to label parts of light eyes can detect.
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