Wave Optics · Physics · AP EAPCET

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MCQ (Single Correct Answer)

1
If a microscope is placed in air, the minimum separation of two objects seen as distinct is $6 \mu \mathrm{~m}$. If the same is placed in a medium of refractive index 1.5, then the minimum separation of the two objects to see as distinct is
AP EAPCET 2024 - 20th May Evening Shift
2
In Young's double slit experiment two slits are placed 2 mm from each other. Interference pattern is observed on a screen placed 2 m from the plane of the slits. Then the fringe width for a light of wavelength 400 nm is
AP EAPCET 2024 - 20th May Morning Shift
3
In Young's double slit experiment, the intensity at a point where the path difference is $\frac{\lambda}{6}$ ( $\lambda$ being the wavelength of the light used) is $I$. If $I_0$ denotes the maximum intensity, $\frac{I}{I_0}$ is equal to
AP EAPCET 2024 - 19th May Evening Shift
4
In Young's double slit experiment with monochromatic light of wavelength 6000 A . The fringe width is 3 mm . If the distance between the screen and slits is increased by $50 \%$ and the distance between the slits is decreased by $10 \%$, then the fringe width is
AP EAPCET 2024 - 18th May Morning Shift
5

Young's double slit experiment is conducted with monochromatic light of wavelength 5000$$\mathop A\limits^o $$, with slit separation of 3 mm and observer at 20 cm away from the slits. If a 1 mm transparent plate is placed infront of one of the slits, the fringes shift by 6 mm . The refractive index of the transparent plate is

AP EAPCET 2022 - 5th July Morning Shift
6

In Young's double slit experiment the slits are 3 mm apart and are illuminated by light of two wavelengths $$3750 \mathop A\limits^o$$ and $$7500 \mathop A\limits^o$$. The screen is placed at 4 m from the slits. The minimum distance from the common central bright fringe on the screen at which the bright fringe of one interference pattern due to one wavelength coincide with the bright fringe of the other is

AP EAPCET 2022 - 5th July Morning Shift
7

When monochromatic light of wavelength 600 nm is used in Young's double slit experiment, the fifth order bright fringe is formed at 6 mm from the central bright fringe on the screen. If the experiment is conducted with light of wavelength 400 nm from the central bright fringe, the third order bright fringe will be located at

AP EAPCET 2022 - 4th July Evening Shift
8

The position of the direct image obtained at O, when a monochromatic beam of light is passed through a plane transmission grating at normal incidence is shown in figure. The diffracted images A, B, and C correspond to the first, second and third order diffraction. When the source is replaced by another source of shorter wavelength,

AP EAPCET 2021 - 20th August Morning Shift Physics - Wave Optics Question 8 English 1AP EAPCET 2021 - 20th August Morning Shift Physics - Wave Optics Question 8 English 2

AP EAPCET 2021 - 20th August Morning Shift
9

In Young’s double slit experiment, the separation between the slits is halved and the distance between the screen is doubled. The fringe width is

AP EAPCET 2021 - 19th August Evening Shift
10

In a diffraction pattern due to a single slit of width $$a$$, the first minimum is observed at an angle $$30 \Upsilon$$ when light of wavelength $$500 \mathrm{~nm}$$ is incident on the slit. The first secondary maximum is observed at an angle of

AP EAPCET 2021 - 19th August Morning Shift
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