Question:
The shape of air film formed between the plano-convex lens and the glass slab in Newton’s ring experiment is
The shape of air film formed between the plano-convex lens and the glass slab in Newton’s ring experiment is
Show Hint
Newton’s rings result from the interference of light in the wedge-shaped air gap between the lens and the glass plate.
Updated On: Mar 17, 2025
- Rectangular shape
- Uniform thickness
- Wedge shape
- No air film is formed
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
When a plano-convex lens is placed on a glass slab, an air film is formed which is wedge-shaped. The film thickness gradually changes from the point of contact (negligible thickness) outward.
Was this answer helpful?
0
0
Top Questions on Optics
A convex lens has power \( P \). It is cut into two halves along its principal axis. Further, one piece (out of two halves) is cut into two halves perpendicular to the principal axis as shown in the figure. Choose the incorrect option for the reported lens pieces.
- A ray of light passes from vacuum into a medium of refractive index \( n \). If the angle of incidence is twice the angle of refraction, then the angle of incidence in terms of refractive index \( n \) is
- A ray of light passes from vacuum into a medium of refractive index \( n \). If the angle of incidence is twice the angle of refraction, then the angle of incidence in terms of refractive index \( n \) is
- A convex lens has power \( P \). It is cut into two halves along its principal axis. Further, one piece (out of two halves) is cut into two halves perpendicular to the principal axis as shown in the figure. Choose the incorrect option for the reported lens pieces.
\includegraphics[width=0.5\linewidth]{Q19.png} - A convex lens (f = 30 cm) is in contact with a concave lens (f = -20 cm). An object is placed on the left side at a distance of 20 cm. Find the image distance.
View More Questions
Questions Asked in CUET PG exam
- What is the antonym of eradicate?
- CUET (PG) - 2025
- Antonyms
- Who was the first Secretary-General of the UN?
- CUET (PG) - 2025
- United Nations and its Organizations
- What is the correct verb form: He, as well as his friends, ?
- Which preposition is correct: Chanakya lived ?
- CUET (PG) - 2025
- Prepositions
- Identify the possessive noun: My office car is parked elsewhere.
View More Questions