Exam Details
Subject | applied science-i (physics) | |
Paper | ||
Exam / Course | diploma engineering | |
Department | ||
Organization | Gujarat Technological University | |
Position | ||
Exam Date | January, 2019 | |
City, State | gujarat, ahmedabad |
Question Paper
1/3
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER I-II(OLD) EXAMINATION -WINTER 2018
Subject Code:310002 Date: 10-01-2019
Subject Name: Applied Science- I [physics]
Time:02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of programmable Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.
Q.1
Define derived units with example.
Explain angle of contact.
Write Sabine's formula for reverberation time and explain it.
What is ultrasonic wave?
What is radio-activity?
Wavelength of X-ray is 100 A0. Calculate its frequency.
Define refractive index.
14
100 A0
14
Q.2
Write short note on nuclear reactor.
Define half life and average life for radioactive element.
05
02
05
02
What is reflection of light? Write laws of reflection of light.
Water rises in a capillary tube by 3 cm when it is vertically immersed in water. Calculate radius of capillary tube if surface tension and density of water are 72 X 10-3 N/m and 103 kg/m3 respectively.
04
03
3 cm 72 X 10-3 N/m 103 kg/m3
04
03
OR
Explain optical pumping and population inversion of electrons.
Volume of a hall is 6000m3. Find reverberation time if absorption by all surfaces of hall is 225 O.W.U.
04
03
2/3
6000m3 225 O.W.U.
04
03
Q.3
Define cohesive force and adhesive force.
Explain surface tension by molecular theory.
02
05
02
05
Explain mass defect and binding energy.
Explain dispersion of light.
03
04
03
04
OR
Q.3
State characteristics of alpha, beta and gamma rays.
07
07
Write fundamental physical quantities and their units with symbol in S. I.
Write four characteristics of a LASER beam.
05
02
LASER
05
02
Q.4
Explain piezoelectric method for the production of ultrasonic wave.
Pitch of a micrometer screw gauge is 1 mm. Calculate its least count if there are 100 divisions on its circular scale.
05
02
1 mm 100
05
02
Explain working of a vernier caliper with a neat sketch.
Write four applications of X-rays.
05
02
05
02
OR
Q.4
State Difference between longitudinal and transverse waves
Half life of a radioactive element is 40 day. Calculate its average life and decay constant.
04
03
40
04
03
Explain phenomenon of fluorescence and write names of four fluorescent materials.
Define time period and frequency of a wave and write relation between them.
04
03
04
03
Q.5
State factors affecting reverberation time and acoustics of buildings.
07
07
3/3
Draw a diagram of simple microscope and derive formula for its magnifying power.
07
07
OR
Q.5
Write short note on determination of surface tension of a liquid by capillary rise method.
Focal length of a convex lens is 30 cm. Calculate its focal power.
05
02
30 cm
05
02
Explain construction and working of ruby laser with a neat diagram.
07
07
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER I-II(OLD) EXAMINATION -WINTER 2018
Subject Code:310002 Date: 10-01-2019
Subject Name: Applied Science- I [physics]
Time:02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of programmable Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.
Q.1
Define derived units with example.
Explain angle of contact.
Write Sabine's formula for reverberation time and explain it.
What is ultrasonic wave?
What is radio-activity?
Wavelength of X-ray is 100 A0. Calculate its frequency.
Define refractive index.
14
100 A0
14
Q.2
Write short note on nuclear reactor.
Define half life and average life for radioactive element.
05
02
05
02
What is reflection of light? Write laws of reflection of light.
Water rises in a capillary tube by 3 cm when it is vertically immersed in water. Calculate radius of capillary tube if surface tension and density of water are 72 X 10-3 N/m and 103 kg/m3 respectively.
04
03
3 cm 72 X 10-3 N/m 103 kg/m3
04
03
OR
Explain optical pumping and population inversion of electrons.
Volume of a hall is 6000m3. Find reverberation time if absorption by all surfaces of hall is 225 O.W.U.
04
03
2/3
6000m3 225 O.W.U.
04
03
Q.3
Define cohesive force and adhesive force.
Explain surface tension by molecular theory.
02
05
02
05
Explain mass defect and binding energy.
Explain dispersion of light.
03
04
03
04
OR
Q.3
State characteristics of alpha, beta and gamma rays.
07
07
Write fundamental physical quantities and their units with symbol in S. I.
Write four characteristics of a LASER beam.
05
02
LASER
05
02
Q.4
Explain piezoelectric method for the production of ultrasonic wave.
Pitch of a micrometer screw gauge is 1 mm. Calculate its least count if there are 100 divisions on its circular scale.
05
02
1 mm 100
05
02
Explain working of a vernier caliper with a neat sketch.
Write four applications of X-rays.
05
02
05
02
OR
Q.4
State Difference between longitudinal and transverse waves
Half life of a radioactive element is 40 day. Calculate its average life and decay constant.
04
03
40
04
03
Explain phenomenon of fluorescence and write names of four fluorescent materials.
Define time period and frequency of a wave and write relation between them.
04
03
04
03
Q.5
State factors affecting reverberation time and acoustics of buildings.
07
07
3/3
Draw a diagram of simple microscope and derive formula for its magnifying power.
07
07
OR
Q.5
Write short note on determination of surface tension of a liquid by capillary rise method.
Focal length of a convex lens is 30 cm. Calculate its focal power.
05
02
30 cm
05
02
Explain construction and working of ruby laser with a neat diagram.
07
07
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