Wave Optics [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 58 - 62 of 92
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Question 58
Question MCQ▾
When the light source is moving towards the observer,
Choices
Choice (4) | Response | |
---|---|---|
a. | The wavelength of light decreases | |
b. | The wavelength of light remains same | |
c. | The wavelength of light increases | |
d. | The velocity of light increases |
Question 59
Question MCQ▾
Two waves originating from source S1 and S2 having zero phase difference and common wavelength X will show completely destructive interference at a point P if (S1 P - S2 P) is-
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | 2 λ | |
c. | ||
d. |
Question 60
Question MCQ▾
In a Young՚s double slit experiment, the separation between the slits is 0.10 mm, the wavelength of light used is 600 nm and the interference pattern is observed on a screen 1.0 m away. Find the separation between the successive bright fringes.
Choices
Choice (4) | Response | |
---|---|---|
a. | 6.6 mm | |
b. | 6 cm | |
c. | 6.0 mm | |
d. | 6 m |
Question 61
Question MCQ▾
Width of slit is 0.3 mm Fraunhofer diffraction is observed in focus plane of lens of a lens of focal length 1 m. If third minima is at 5 mm distance from central maxima, then wavelength of light is-
Choices
Choice (4) | Response | |
---|---|---|
a. | 5000 Å | |
b. | 6000 Å | |
c. | 7000 Å | |
d. | 6500 Å |
Question 62
Appeared in Year: 1999 (AIIMS)
Question MCQ▾
In Young՚s experiment, monochromatic light is used to illuminate the two slits A and B. Interference fringes are observed on a screen placed in front of the slits. Now if a thin glass plate is placed normally in the path of the beam coming from the slit then – [AIIMS]
Choices
Choice (4) | Response | |
---|---|---|
a. | The fringes will disappear | |
b. | There will be no change in the fringe width | |
c. | The fringe width will decrease | |
d. | The fringe width will increase |