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## #1 2017-11-03 06:12:21

**shakeel123****Moderator**- Registered: 2017-09-21
- Posts: 50,796

### The revolving power of a lens is given by?

# ECAT Engineering Exams Quizzes MCQs Quizzes ECAT Engineering Entry Test 2017 Physics Optical Instruments 1

**Question:**

The revolving power of a lens is given by

**Option A):**

R = 1/αmin= 1.28 D/λ**Option B):**

R = 1/αmin= 1.22 λ/D**Option C):**

R = 1/αmin= D/1.22 λ**Option D):**

R = 1/αmin= 1.21 λ/D

**Correct Answer is Option B):**

R = 1/αmin= 1.22 λ/D

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## 2017-11-03 06:12:21

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### Re: The revolving power of a lens is given by?

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