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Previous Year Question Paper of Class 12 Bihar Board Physics. We covered all the Previous Year Question Paper of Class 12 Bihar Board Physics in this post for free so that you can practice well for the exam.
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Class 12 Bihar Board Physics mcqs for Students
A pipe closed at one end produces a fundamental sound of frequency 412 Hz. When it is cut into two equal halves, the fundamental frequencies of the two resulting pieces are
a) 412 Hz, 206 Hz
b) 824 Hz, 206 Hz
c) 1648 Hz, 824 Hz
d) 824 Hz, 412 Hz
Option c – 1648 Hz, 824 Hz
Two organ pipes, both closed at one end, emit their fundamental notes and produce 5 beats per second. If their lengths are in the ratio 51 : 50, the corresponding fundamental frequencies are
a) 250 Hz, 255 Hz
b) 260 Hz, 265 Hz
c) 255 Hz, 260 Hz
d) 265 Hz, 270 Hz
Option a – 250 Hz, 255 Hz
An open organ pipe produces a fundamental note of frequency 230 Hz. If the speed of sound in air is 330 m/s, the length of the pipe is closest to
a) 0.25 m
b) 0.50 m
c) 0.75 m
d) 2.00 m
Option c – 0.75 m
A cylindrical tube open at both ends has a fundamental frequency n. If one end of the tube is closed, the new fundamental frequency becomes
a) 0.5 n
b) n
c) 2 n
d) 4 n
Option a – 0.5 n
If the speed of sound in air is 350 m/s, the fundamental frequency produced by a tube of length 50 cm open at both ends is
a) 50 Hz
b) 175 Hz
c) 350 Hz
d) 750 Hz
Option c – 350 Hz
The velocity of sound in air is 320 m/s. A pipe of length 1 m closed at one end can resonate with sound of frequency
a) 80 Hz
b) 240 Hz
c) 320 Hz
d) 400 Hz
Option a – 80 Hz
A tube closed at one end produces a fundamental note of frequency 512 Hz. If the tube is opened at both ends, the fundamental frequency that can be produced is
a) 1024 Hz
b) 512 Hz
c) 256 Hz
d) 128 Hz
Option a – 1024 Hz
The shortest length of a tube open at both ends that resonates with a tuning fork of frequency 350 Hz (speed of sound in air = 350 m/s) is
a) 0.25 m
b) 0.5 m
c) 1 m
d) 2 m
Option b – 0.5 m
An open organ pipe has a fundamental frequency of 400 Hz. If one end of the pipe is closed, the new fundamental frequency will be
a) 200 Hz
b) 400 Hz
c) 600 Hz
d) 800 Hz
Option a – 200 Hz
The speed of sound in air is 330 m/s. The fundamental frequency of an organ pipe open at both ends and having a length of 0.3 m is
a) 200 Hz
b) 550 Hz
c) 300 Hz
d) 275 Hz
Option b – 550 Hz
An air column in a pipe closed at one end resonates with a tuning fork of frequency 680 Hz. If the speed of sound in air is 340 m/s, the required length of the air column (in metres) is
a) 0.25
b) 0.125
c) 0.185
d) 0.5
Option b – 0.125
A closed organ pipe and an open organ pipe have their first overtones at the same frequency. The ratio of their lengths is
a) 1 : 2
b) 2 : 3
c) 3 : 4
d) 4 : 3
Option c – 3 : 4
We covered all the previous year question paper of Class 12 bihar board Physics above in this post for free so that you can practice well for the exam.
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Also, check out:
- Nootan Class 12 Physics Solution
- Nageen Prakashan Physics Class 12
- Physics Question Bank Solution Class 12
