A thin film of soap solution (n=1.4) lies on the top of a glass plate (n=1.5).

⇦

⇨

A thin film of soap solution (n=1.4) lies on the top of a glass plate (n=1.5). When visible light is incident almost normal to the plate, two adjacent reflection maxima are observed at two wavelengths 420 and 630 nm. The minimum thickness of the soap solution is

Options

(a) 420 nm
(b) 450 nm
(c) 630 nm
(d) 1260 nm

Correct Answer:

450 nm

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

Related Questions:

1. Light with an energy flux of 25×10⁴ Wm⁻² falls on a perfectly reflecting surface
2. In a ionised gas,the mobile charge carriers are
3. A particle moves along the x-axis such that its co-ordinate (x) varies with time (t)
4. A ball is thrown vertically downwards from a height of 20 m with an initially
5. An electron of mass Mₑ, initially at rest, moves through a certain distance in a uniform

Topics: Wave Optics (101)
Subject: Physics (2479)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends