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CGP EDU Academic Team
Published on: August 14, 2026
If P = (x, y), F 1 = (3, 0), F 2 = ( − 3, 0) and 16x 2 + 25y 2 = 400, then PF 1 + PF 2 equals
Text Solution
Verified by ExpertsThe correct answer is:
C
Ellipse 
+ 
= 1
e = 
= 
foci = ( + ae,0) = (5 × 3/5,0) = ( + 3, 0)
⇒ F 1 & F 2 are foci.
PF 1 + PF 2 = 2a = 10
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