B 0I00PHT1toot2204
RegNo.: Name:
APJ ABDUL rj11ay TECI{NOLOGICAL UNM
Second Semester B.Tech Degree Examination June 2022 Q0
'#tQ
Course Code: PHTll0
Course Name: ENGINEERING PHYSICS B
(2019 -Scheme)
Max. Marks: 100 Duration:3 Hours
PART A
Answer all questions, each carries 3 mnrks Marks
Distinguish between free oscillation and damped oscillation. (3)
What will happen to fundamental frequency when length of string reduced (3)
to one third of original length kept under same tension?
3 Why thin transparent films appear to be beautifully coloured under sunlight? (3)
4 Wtite any three difference between Fresnel and Fraunhofer diffraction? (3)
5 Give the physical significance of the wave function. (3)
6 What are the reasons for the change of properties of materials at nano sizes? (3)
7 Distinguish between musical sound and noise? (3)
8 Mention the properties of ultrasonic waves and list its significant industrial and (3)
medical applications?
9 What do you mean by pumping in lasers? List any three pumping methods used. (3)
10 braw a piiiierly labelled block diagram of a fibre optic communication system. (3)
PART B
Answer onefull questionfrom eaih *frdule, each question carries 1l mnris.
MODULE 1
1l (a) Write the differential equation of a forced harmonic oscillator and find its (10)
solution. Derive an expression for amplitude and phase difference.
by 58sin 2n(t10.05 - 0.05x).Find
(b) A simple harmonic wave is represented (4)
wavelength, wavevector,amplitude and velocity ofwave. Also find displacement
of particle 40cm from the origin and 2s after the start of motion.(x,y in cm and t
in Second).
Page 1 of 3
Downloaded from Ktunotes.in
RegNo.: Name:
APJ ABDUL rj11ay TECI{NOLOGICAL UNM
Second Semester B.Tech Degree Examination June 2022 Q0
'#tQ
Course Code: PHTll0
Course Name: ENGINEERING PHYSICS B
(2019 -Scheme)
Max. Marks: 100 Duration:3 Hours
PART A
Answer all questions, each carries 3 mnrks Marks
Distinguish between free oscillation and damped oscillation. (3)
What will happen to fundamental frequency when length of string reduced (3)
to one third of original length kept under same tension?
3 Why thin transparent films appear to be beautifully coloured under sunlight? (3)
4 Wtite any three difference between Fresnel and Fraunhofer diffraction? (3)
5 Give the physical significance of the wave function. (3)
6 What are the reasons for the change of properties of materials at nano sizes? (3)
7 Distinguish between musical sound and noise? (3)
8 Mention the properties of ultrasonic waves and list its significant industrial and (3)
medical applications?
9 What do you mean by pumping in lasers? List any three pumping methods used. (3)
10 braw a piiiierly labelled block diagram of a fibre optic communication system. (3)
PART B
Answer onefull questionfrom eaih *frdule, each question carries 1l mnris.
MODULE 1
1l (a) Write the differential equation of a forced harmonic oscillator and find its (10)
solution. Derive an expression for amplitude and phase difference.
by 58sin 2n(t10.05 - 0.05x).Find
(b) A simple harmonic wave is represented (4)
wavelength, wavevector,amplitude and velocity ofwave. Also find displacement
of particle 40cm from the origin and 2s after the start of motion.(x,y in cm and t
in Second).
Page 1 of 3
Downloaded from Ktunotes.in
