Diffraction (due to a single slit, width of central maximum ) NEET Questions

Physics - Optics

Diffraction (due to a single slit, width of central maximum ) MCQ Questions


7.
How does the intensity of polarized light change when passed through a second Polaroid at 90°?
A.
Doubles
B.
Zero intensity
C.
Reduces by half
D.
Remains unchanged
😑 View Answer Rough Work Error
ANSWER :
B. Zero intensity
8.
Which of the following waves can be plane-polarized?

NEET - 2015

A.
Sound waves in air
B.
Transverse waves on a string
C.
Longitudinal waves in a gas
D.
Radio waves
😑 View Answer Rough Work Error
ANSWER :
B. Transverse waves on a string
9.
Which of the following is not an application of polarization?
A.
LCD screens
B.
3D glasses
C.
Polarized sunglasses
D.
Medical imaging
😑 View Answer Rough Work Error
ANSWER :
D. Medical imaging
10.
What is the main advantage of using Polaroids in photography?
A.
Enhances color contrast
B.
Removes unwanted reflections
C.
Improves brightness
D.
Removes diffraction effects
😑 View Answer Rough Work Error
ANSWER :
B. Removes unwanted reflections
11.
Brewster’s angle is the angle of incidence at which:

NEET - 2016

A.
Reflected light is completely polarized
B.
Refracted light is completely polarized
C.
Both reflected and refracted light are polarized
D.
Total internal reflection occurs
😑 View Answer Rough Work Error
ANSWER :
A. Reflected light is completely polarized
12.
Which of the following materials is commonly used for Polaroids?
A.
Quartz
B.
Plastic
C.
Sodium chloride
D.
Polyvinyl alcohol
😑 View Answer Rough Work Error
ANSWER :
D. Polyvinyl alcohol