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## #1 2017-11-03 06:10:23

**shakeel123****Moderator**- Registered: 2017-09-21
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### If N is the number of rulings on the grating, then the resolving ...

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

**Question:**

If N is the number of rulings on the grating, then the resolving power in the mth order diffraction equals to

**Option A):**

R = N/m**Option B):**

R = N x m**Option C):**

R = N x m²**Option D):**

R = m/N

**Correct Answer is Option B):**

R = N x m

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## 2017-11-03 06:10:23

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### Re: If N is the number of rulings on the grating, then the resolving ...

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