Question:
Which of the following holds for coherence of light?
A. Coherence is mainly divided into temporal and spatial coherence,
B. Temporal coherence is directly related to finite bandwidth of source,
C. Spatial coherence is related to finite size of the source,
D. Spatial coherence is related to finite bandwidth of the source.
Which of the following holds for coherence of light?
A. Coherence is mainly divided into temporal and spatial coherence,
B. Temporal coherence is directly related to finite bandwidth of source,
C. Spatial coherence is related to finite size of the source,
D. Spatial coherence is related to finite bandwidth of the source.
A. Coherence is mainly divided into temporal and spatial coherence,
B. Temporal coherence is directly related to finite bandwidth of source,
C. Spatial coherence is related to finite size of the source,
D. Spatial coherence is related to finite bandwidth of the source.
Show Hint
Temporal coherence depends on bandwidth, while spatial coherence depends on source size.
Updated On: May 19, 2026
- A, B, D only
- A, B, C only
- A, C, D only
- A, B, C, D only
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
Coherence of light describes a fixed phase relationship between waves. It is mainly of two types: temporal coherence and spatial coherence.
Step 1: Check statement A.
Coherence is divided into temporal coherence and spatial coherence. \[ A \text{ is correct} \]
Step 2: Check statement B.
Temporal coherence is related to the spectral width or bandwidth of the source. \[ B \text{ is correct} \]
Step 3: Check statement C.
Spatial coherence is related to the finite size of the source. \[ C \text{ is correct} \]
Step 4: Check statement D.
Finite bandwidth is connected with temporal coherence, not spatial coherence. \[ D \text{ is incorrect} \] Therefore: \[ A,B,C \] \[ \therefore \text{Correct Answer is (B)} \]
Coherence of light describes a fixed phase relationship between waves. It is mainly of two types: temporal coherence and spatial coherence.
Step 1: Check statement A.
Coherence is divided into temporal coherence and spatial coherence. \[ A \text{ is correct} \]
Step 2: Check statement B.
Temporal coherence is related to the spectral width or bandwidth of the source. \[ B \text{ is correct} \]
Step 3: Check statement C.
Spatial coherence is related to the finite size of the source. \[ C \text{ is correct} \]
Step 4: Check statement D.
Finite bandwidth is connected with temporal coherence, not spatial coherence. \[ D \text{ is incorrect} \] Therefore: \[ A,B,C \] \[ \therefore \text{Correct Answer is (B)} \]
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