"Colouris a quality of light, as seen by the eye, caused by light waves having different wave lengths." This is stated by
A. P. Mehra
B. Modern Century Encyclopedia
C. Britanica
D. Rutt
Answer: Option B
A. P. Mehra
B. Modern Century Encyclopedia
C. Britanica
D. Rutt
Answer: Option B
A. aluminium
B. iron
C. stainless steel
D. copper
A. Rutt
B. Stella Saundaraja
C. Crang and Rush
D. Mary Jean Alexander
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