EASY
JEE Main
IMPORTANT
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A wave of frequency =3 GHz, strikes a particle of size 1100th of λ, then this phenomenon is called as

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Important Questions on Wave Optics

MEDIUM
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Wave Optics>JEE Main - 27 June 2022 Shift 1>Q 74
In Young's double slit experiment the two slits are 0.6 mm distance apart. Interference pattern is observed on a screen at a distance 80 cm from the slits. The first dark fringe is observed on the screen directly opposite to one of the slits. The wavelength of light will be _____ nm.
MEDIUM
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Wave Optics>JEE Main - 28 June 2022 Shift 1>Q 75
The aperture of the objective is 24.4 cm. The resolving power of this telescope, if a light of wavelength 2440 A∘ is used to see the object will be
MEDIUM
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Wave Optics>JEE Main - 28 June 2022 Shift 2>Q 76
In young's double slit experiment performed using a monochromatic light of wavelength λ, when a glass plate μ=1.5 of thickness xλ is introduced in the path of the one of the interfering beams, the intensity at the position where the central maximum occurred previously remains unchanged. The value of x will be
MEDIUM
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Wave Optics>JEE Main - 28 June 2022 Shift 2>Q 77
In a Young's double slit experiment, an angular width of the fringe is 0.35° on a screen placed at 2 m away for particular wavelength of 450 nm. The angular width of the fringe, when whole system is immersed in a medium of refractive index 75, is 1α. The value of α is _____ .
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Wave Optics>JEE Main - 29 June 2022 Shift 1>Q 78
Using Young's double slit experiment, a monochromatic light of wavelength 5000Å produces fringes of fringe width 0.5 mm. If another monochromatic light of wavelength 6000Å is used and the separation between the slits is doubled, then the new fringe width will be
MEDIUM
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Wave Optics>JEE Main - 29 June 2022 Shift 2>Q 79
In a double slit experiment with monochromatic light, fringes are obtained on a screen placed at some distance from the plane of slits. If the screen is moved by 5×10-2 m towards the slits, the change in fringe width is 3×10-3 cm. If the distance between the slits is 1 mm, then the wavelength of the light will be____nm.
MEDIUM
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Wave Optics>JEE Main - 26 July 2022 Shift 1>Q 80
In young's double slit experiment, the fringe width is 12 mm. If the entire arrangement is placed in water of refractive index 43, then the fringe width becomes (in mm)
EASY
JEE Main
IMPORTANT
EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 19 - Wave Optics>JEE Main - 27 July 2022 Shift 1>Q 81
A microscope was initially placed in air (refractive index 1). It is then immersed in oil (refractive index 2). For a light whose wavelength in air is $\lambda$, calculate the change of microscope's resolving power due to oil and choose the correct option