true/false A lens that converges

true/false A lens that converges light is concave
1. 1 answer
2. asked by peter
3. 885 views
If a_n >0 and b_n >0 and series ∑ sqrt( (a_n)^2 +(b_n)^2 ) converges, then ∑a_n and ∑b_n both converge.True or false? If
1. 1 answer
2. asked by Rebecca
3. 474 views
A converging lens is thicker at the center of the lens than the edges.True False
1. 1 answer
2. asked by Anonymous
3. 530 views
TRUE OR FALSE1. if the lim as n->infinity of a(sub n)=0, then the sum from n=1 to infinity of a(sub n) converges i said this was
1. 1 answer
2. asked by sarah
3. 760 views
(c) Complete the truth table for the following circuit:A B C D E Output True True True False True ON True True False false false
1. 2 answers
2. 596 views
True/False1)Specular reflection obeys the laws of reflection while diffuse reflection does not. False. drwls said its true but I
1. 1 answer
2. asked by Jon
3. 953 views
True or Falsea) Every convergent sequence is bounded b) If lim n→∞ an=0, then the series ∑n=∞ 1 an converges
1. 1 answer
2. asked by Dom
3. 516 views
A lens that is thicker in the middle and thinner at the ends, bending light rays that pass through it, would be which kind of
1. 1 answer
2. asked by AT
3. 212 views
1)A convex lens is used to obtain an enlarged virtual image.false. 2)The lens of the eye has a fixed focal length. false.
1. 1 answer
2. asked by Jon
3. 986 views
True or false, please prove it.The series Sigma n=1 to inifinity e^npii/2 converges.
1. 1 answer
2. asked by Sasha
3. 266 views