ENGINEERING PHYSICS LAB MANUAL

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SCHOOL OF PHYSICAL AND CHEMICAL SCIENCES

DEPARTMENT OF PHYSICS

ENGINEERING PHYSICS LAB MANUAL

(As per 2017 Academic Regulation) Common to all branches of B. Tech. First Year

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CONTENTS

LAB INSTRUCTIONS

MEASURING INSTRUMENTS

I. Screw Gauge II. Vernier Calipers III. Travelling Microscope IV. Spectrometer

LIST OF EXPERIMENTS

1. Determination of Velocity of Ultrasonic waves in a given liquid using Ultrasonic Interferometer.

2. Determination of thickness of a thin wire using Air Wedge method. 3. Determination of wavelength of light using spectrometer diffraction grating. 4. Determination of angle of divergence of a laser beam using He-Ne laser. 5. Determination of particle size of lycopodium powder using semiconductor laser. 6. Determination of wavelength of laser light using semiconductor laser diffraction. 7. Determination of Acceptance angle and Numerical Aperture using fiber optic

cable. 8. Determination of thermal conductivity of a bad conductor by Lee's disc method. 9. Determination of wavelength of ultrasonic waves using Kundt's tube method. 10. Determination of thermal conductivity of a good conductor by Forbe's method. 11. Determination of solar cell characteristics.

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GENERAL LAB INSTRUCTIONS

1. The students should attend the lab neatly with proper prescribed uniform.

2. The record notebook should be covered with the laminated brown sheet neatly and they should bring it to every lab class.

3. Before any cycle of experiments, a class is spent on demonstrating those experiments. The students should not miss that class for any reason and they have to be very attentive in that class.

4. They should read the procedure thoroughly for the lab experiment from the manual and come well prepared.

5. They should bring the required things like scientific calculator, eraser, pencil, pen etc to every lab class. Borrowing things is not allowed.

6. They should not go to others table leaving their place without taking permission from the staff. They should maintain silence in the class.

7. They should do the experiment systematically and write their observations neatly in the record note book with pen. After writing a few readings in the beginning, they should show the record note book to their faculty member and get attestation for the readings from the faculty. After completing the experiment, they should do the calculations neatly.

8. They should complete the calculation in the lab class itself and get the signature from the staff. In case if they are not able to complete, they should get attestation from the staff in the record note book for the readings taken and get the result corrected the next day itself, by submitting the notebook in the lab. They have to collect their note book from the staff after a day.

9. They should not miss any lab class. This will be viewed very seriously. If they miss the lab class due to unavoidable reason, they will be allowed for the next lab provided they submit a letter signed by the parent or Deputy warden (hosteller) stating the reason. It is the responsibility of the students to complete

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the missed experiments as soon as possible after getting permission from the faculty incharge.

10. In every lab class, the students have to sign in a register while receiving the apparatus from the lab assistants. After completing the experiment, they should hand over the apparatus and sign in the register again, failing which it would be assumed that they haven't returned the apparatus and the cost of the apparatus will be collected from them. So it is the responsibility of the students to return the apparatus to the lab assistants as soon as they complete the lab work.

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INSTRUCTIONS FOR WRITING IN RECORD NOTE

Before coming to the lab, the students should write the experiment number, date, aim, formula, least count calculation, ray diagram or circuit diagram, tabular column neatly in the record note book. The record note book will be checked in the beginning of the lab class.

RECORD NOTE LAYOUT

1. Title of the Experiment

:

2. Date of Commencement

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3. Date of Completion and reporting

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4. Objectives of the experiment

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5. Aim of the experiment

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6. Apparatus required

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7. Formula in detail

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8. Procedure of the experiment

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9. Experimental setup/Circuit diagram :

10. Tabular column

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11. Calculation

:

12. Result

:

13. Learning outcome achieved

:

(Right hand side) (Right hand side) (Right hand side) (Right hand side) (Right hand side) (Right hand side) (Right hand side) (Right hand side) (Left hand side) (Left hand side) (Left hand side) (Right hand side) (Right hand side)

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