S. L. Arora Solutions for Chapter: Wave Optics, Exercise 5: Problems For Practice

Author:S. L. Arora

S. L. Arora Physics Solutions for Exercise - S. L. Arora Solutions for Chapter: Wave Optics, Exercise 5: Problems For Practice

Attempt the free practice questions on Chapter 2: Wave Optics, Exercise 5: Problems For Practice with hints and solutions to strengthen your understanding. PHYSICS A Reference Book for Class 12 Volume 2 solutions are prepared by Experienced Embibe Experts.

Questions from S. L. Arora Solutions for Chapter: Wave Optics, Exercise 5: Problems For Practice with Hints & Solutions

HARD
12th CBSE
IMPORTANT

A soap film 5×10-5 cm thick is viewed at an angle of 35° to the normal. Find the wavelength of light in the visible spectrum which will be absent from reflected light (μ=1.33). Given wavelength range of the visible spectrum is 3900Å to 7800Å.

MEDIUM
12th CBSE
IMPORTANT

A thin film of thickness 4×10-5 cm and μ=1.5 is illuminated by white light incident normal to its surface. What wavelength (expressed in Å ) in the visible range be intensified in the reflected beam?

MEDIUM
12th CBSE
IMPORTANT

In a thin film, between two points A and B, eight fringes are observed with light of wavelength 5461 Å. How many fringes will be observed between the same two points A and B if the wavelength of light used is 6500 Å?

MEDIUM
12th CBSE
IMPORTANT

With a thin air film between two points, 6 fringes appear when light of wavelength 5890 Å is used. Calculate the difference in the thickness of the film (expressed in μm) between the two points.

MEDIUM
12th CBSE
IMPORTANT

White light is incident normally on a plane parallel thin film of μ=1.5. Find the minimum thickness of the film in nm for which light of λ=4000 Å is absent from the reflected light.

HARD
12th CBSE
IMPORTANT

A soap film of refractive index 4/3 and thickness 1.5×10-4cm is illuminated by white light incident at angle of 45°. The reflected light is examined by a spectroscope in which a dark band corresponding to the wavelength 5×10-5 cm is found. Find the order of the interference band.

HARD
12th CBSE
IMPORTANT

White light is incident on a soap film of μ=4/3 at an angle of 30°. On examining the transmitted light with a spectrometer, a dark band of wavelength 5.5×10-7m is found. Minimum thickness of the film is 1.11×10-n m. Value of n is