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ISC Physics Previous Year Question Paper. We covered all the ISC Physics Previous Year Question Paper in this post for free so that you can practice well for the exam.
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ISC Physics Previous Year Question Paper Mock test for Students
A tuning fork produces 5 beats with a sonometer wire of length 40 cm. When the wire length is reduced by 1 cm, the beats remain unchanged. The frequency of the tuning fork is
a) 385 Hz
b) 320 Hz
c) 395 Hz
d) 400 Hz
Option c – 395 Hz
A tuning fork of frequency 480 Hz is used to excite a sonometer wire whose natural frequency is 240 Hz. The wire will vibrate with a frequency of
a) 240 Hz
b) 480 Hz
c) 720 Hz
d) The wire will not vibrate
Option b – 480 Hz
A stretched wire vibrates at 320 Hz under a certain tension. If the tension is made four times its original value, the new frequency will be
a) 160 Hz
b) 320 Hz
c) 640 Hz
d) 1280 Hz
Option c – 640 Hz
Two wires made of the same material and having equal diameters have their lengths in the ratio 1 : 3 and tensions in the ratio 1 : 4. The ratio of their fundamental frequencies is
a) 3 : 2
b) 3 : 4
c) 4 : 3
d) 1 : 3
Option a – 3 : 2
A stretched string under a load of 9 kgwt vibrates with a frequency of 256 Hz. The load required to produce a note one octave higher is
a) 9/4 kgwt
b) 36 kgwt
c) 18 kgwt
d) 40 kgwt
Option b – 36 kgwt
If the tension of a sonometer wire is increased to nine times its original value, the fundamental frequency becomes
a) 9 times the original
b) 3 times the original
c) one-third of the original
d) one-ninth of the original
Option c – one-third of the original
A stretched string of length 1 m has a Mass per unit length of 0.5 g/m and is under a tension of 20 N. If it is plucked at a point 25 cm from one end, the frequency of vibration will be
a) 100 Hz
b) 200 Hz
c) 300 Hz
d) 400 Hz
Option b – 200 Hz
When the tension in a sonometer wire is increased fourfold, the fundamental frequency changes by a factor of
a) 4
b) 1/4
c) 2
d) 1/2
Option c – 2
A sonometer wire is under a certain tension. If the tension is increased four times and the vibrating length is doubled, the resulting frequency will
a) increase
b) decrease
c) remain unchanged
d) increase or decrease by nine times
Option c – remain unchanged
We covered all the ISC Physics previous year question paper above in this post for free so that you can practice well for the exam.
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