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11th Physics 2 Marks. We covered all the 11th Physics 2 Marks in this post for free so that you can practice well for the exam.
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- Class 11 Physics Objective Questions in Hindi
- Bihar Board Class 11 Physics Question Paper
- India Physical Environment Class 11 NCERT Solutions
11th Physics 2 Marks qna for Students
When a Light ray passes from one medium into another, its speed in the second medium becomes twice that in the first. What is the maximum angle of incidence for which total internal reflection does not occur?
a) 20°
b) 30°
c) 45°
d) 60°
Option b – 30°
The wavelength of green Light in air is 5000 Å, and that of violet Light in water is 3000 Å. If the wavelength of green Light in water is equal to the wavelength of violet Light in air, what is its value?
a) 4045 Å
b) 2750 Å
c) 3000 Å
d) 3873 Å
Option d – 3873 Å
A parallel beam of Light strikes the surface of water at an angle of 60° with the surface. If the refractive index of water is 4/3, the ratio of the width of the refracted beam to that of the incident beam is
a) 2.071
b) 3.071
c) 1.071
d) 1.5
Option c – 1.071
A Light beam travels 900 m in air in 3 μs. How much time will the same Light take to travel 1800 m in water if the refractive index of water is 4/3?
a) 4 μs
b) 6 μs
c) 5 μs
d) 8 μs
Option d – 8 μs
We covered all the 11th Physics 2 marks above in this post for free so that you can practice well for the exam.
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Also, check out:
- Class 11 Physics Objective Questions in Hindi
- Bihar Board Class 11 Physics Question Paper
- India Physical Environment Class 11 NCERT Solutions
