List-I (Measuring device) | List-II (Parameter measured) | ||
A. | Diffraction grating | 1. | Smaller angular deviations on long flat surfaces |
B. | Optical flat | 2. | On-line measurement of moving parts |
C. | Auto collimators | 3. | Measurement of gear pitch |
D. | Laser scan micrometer | 4. | Surface texture using interferometry |
5. | Measurement of very small displacements |
A) A\[\to \]5, B\[\to \]4, C\[\to \]2, D\[\to \]1
B) A\[\to \]3, B\[\to \]5, C\[\to \]1, D\[\to \]2
C) A\[\to \]3, B\[\to \]5, C\[\to \]4, D\[\to \]1
D) A\[\to \]5, B\[\to \]4, C\[\to \]1, D\[\to \]2
Correct Answer: D
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