JEE Main 2020 (Online) 3rd September Morning Slot | Ray & Wave Optics Question 140 | Physics

JEE Main 2020 (Online) 3rd September Morning Slot

MCQ (Single Correct Answer)

-1

In a Young’s double slit experiment, light of 500 nm is used to produce an interference pattern. When the distance between the slits is 0.05 mm, the angular width (in degree) of the fringes formed on the distance screen is close to

0.17^o

1.7^o

0.57^o

0.07^o

JEE Main 2020 (Online) 2nd September Evening Slot

MCQ (Single Correct Answer)

-1

In a Young’s double slit experiment, 16 fringes are observed in a certain segment of the screen when light of a wavelength 700 nm is used. If the wavelength of light is changed to 400 nm, the number of fringes observed in the same segment of the screen would be

JEE Main 2020 (Online) 2nd September Morning Slot

MCQ (Single Correct Answer)

-1

Interference fringes are observed on a screen by illuminating two thin slits 1 mm apart with a light source ($$\lambda $$ = 632.8 nm). The distance between the screen and the slits is 100 cm. If a bright fringe is observed on a screen at a distance of 1.27 mm from the central bright fringe, then the path difference between the waves, which are reaching this point from the slits is close is

1.27 $$\mu $$m

2.05 $$\mu $$m

2.87 nm

2 nm

JEE Main 2020 (Online) 2nd September Morning Slot

MCQ (Single Correct Answer)

-1

JEE Main 2020 (Online) 2nd September Morning Slot Physics - Ray & Wave Optics Question 143 English

A spherical mirror is obtained as shown in the figure from a hollow glass sphere. If an object is positioned in front of the mirror, what will be the nature and magnification of the image of the object?
(Figure drawn as schematic and not to scale)

Inverted, real and unmagnified

Inverted, real and magnified

Erect, virtual and magnified

Erect, virtual and unmagnified

PREVIOUS NEXT