Two slits are made one millimetre apart and the screen is placed one meter away. What is the fringe separation when blue-green light of wavelength \(500\) nm is used?
1. \(0.5\) mm
2. \(0.3\) mm
3. \(0.05\) mm
4. \(0.03\) mm
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyConsider the following statements and then mark the incorrect statement/s.
a. | The angular separation of the fringes increases if the screen is moved towards the plane of the slits. |
b. | The angular separation of the fringes increases if the (monochromatic) source is replaced by another (monochromatic) source of a shorter wavelength. |
c. | The angular separation of the fringes increases if the separation between the two slits is increased. |
d. | The sharpness of the fringes increases when the source slit is moved closer to the double-slit plane. |
1. Only b and c
2. Only a
3. Only a, b and c
4. All of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology