B.Sc. Physics Assignment 2014-15

B.Sc. Physics Assignment 2014-15

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Internal Assignment

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B.Sc. First Year (Physics)

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() / ( ) 15

B.Sc. Examination 2014-15

Internal Assignment : B.Sc. I Year (Physics)

1. (Course Code)......................................................

2. ..........................................................................

3. (Scholar No.)...........................................................

4. ..........................................................................

Name of Student (in capital letters)

5. ..............................................................................

Name of Father (in capital letters)

6. .....................................................................

.......................................................................................................

........................................................................................................

Address for Corresponding

7. .......................................................................

Name of Study Centre

8. (Regional Centre)...............................................................

Ajmer

Bikaner

Jaipur

Jodhpur

Kota

Udaipur

(Date of Submission) .........................................

INTERNAL ASSIGNMENT

Programme: BSc Ist Year

Subject:Physics

CourseName:Mechanics( )

Course Code:PH-01 Max.Marks:15

Note: The Question paper is divided into three sections A, B, and C. Write Answers as per

the given instruction.

A,B C

Section-A

Very Short Answer Type Questions(Compulsory)

()

Note: Answer all questions. As per the nature of the question you delimit your

answer in one word, one sentence or maximum up to 30 words. Each question carries

1/2 mark. 6x1/2=03

: , 30 6x1/2 = 03

1. A particle is projected from ground with velocity u . What is the maximum range of the particle on the ground ?

u ?

2. Write the value of 1 Horse power in terms of Watt.

1

3. What is value of the coefficient of restitution e for completely inelastic collision?

e ?

4. Write the Keplers first law about motion of planet.

5. A particle of rest mass m0 is moving with velocity v . Write the relativistic mass of the particle.

m0 v

6. Write the relation among bending moment, Youngs Modulus Y, radius of curvature R and geometrical moment of inertia Ig of the crosssection of the beam.

, Y , R Ig

Section-B

(Short Answer Questions)

( )

Note: Answer any 4 questions. Each answer should not exceed 100 words. Each

question carries 1 marks. 4x 1= 06

: 04 | 100

1 4x 1= 06

1. What do you mean by static friction.

2. By using example of freely falling body ,explain the mechanical energy conservation.

3. Two objects of masses 1 Kg and 2 Kg are moving with velocities and m/sec. After collision both the objects stick each other . Find the final momentum of the combined body of the two objects.

1 Kg 2 Kg , and /

4. Adisc has mass M and radius R . Moment of inertia of the disc about its geometrical axis is . Find the moment of inertia of disc about diameter.

M R

5. Briefly explain the modulus of rigidity.

( )

Section C

(Long Answer Questions)

( )

Note: Answer any two questions. You have to delimit your each answer

maximum up to 400 words. Each question carries 03 marks. 2 x 03= 06

: 02 | 400

03 2x 03= 06

1. Explain the following quantities related to circular motion .

(a) Angular displacement

(b) Angular velocity

(c) Angular acceleration

(d) Centripetal acceleration

(a)

(b)

(c)

(d)

2. Derive the Galilean transformation equation between position coordinates.

3. Derive the expression for moment of inertia of solid cylinder about an axis passing through its centre of mass and perpendicular to its length.

4. Derive the following relation among elasticity coefficients

INTERNAL ASSIGNMENT

Programme: BSc Ist Year

Subject:Physics

CourseName:OSCILLATIONS AND WAVES ( )

Course Code:PH-02 Max.Marks:15

Note: The Question paper is divided into three sections A, B, and C. Write Answers as per

the given instruction.

A,B C

Section-A

Very Short Answer Type Questions(Compulsory)

()

Note: Answer all questions. As per the nature of the question you delimit your

answer in one word, one sentence or maximum up to 30 words. Each question carries 1/2 mark. 6x1/2=03

: , 30 6x1/2= 03

1. A block is attached to ideal spring of spring constant K. The block is performing simple harmonic motion with amplitude A. What is total energy of spring block system.

K A ?

2. Two perpendicular simple harmonic motions can be represented as

where is phase difference between these oscillations. If , then what will be resultant motion due to superposition of the above two perpendicular harmonic oscillations.

:

?

3. What do you mean by relaxation time in case of damped oscillations?

?

4. For series LCR circuit ,what is resonance angular frequency? Here circuit has inductance L and capacitance C.

LCR ? L C

5. Wave equation for a wave on string is given by

All quantities are in SI Units. Find the wave velocity.

SI

6. Write the formula for Poyanting vector.

Section-B

(Short Answer Questions)

( )

Note: Answer any 4 questions. Each answer should not exceed 100 words. Each

question carries 1 marks. 4x 1= 06

: 04 | 100

1 4x 1= 06

1. Obtain the angular frequency of oscillation of torsional pendulum.

2. Two identical pendulums each having mass m and length L coupled to each other by spring of spring constant K .If mass m = 0.1 Kg and length L=1 meter and

K= 0.1 Newton/meter then find the frequencies of both modes.

m L K m = 0.1 Kg , L= 1 K = 0.1 /

3. What do you mean by momentum density of electromagnetic waves.

?

4. Explain the Laplace correction for sound wave propagation in gaseous medium.

5. If sound velocity in water is where is the wavelength of the wave. Prove that value of group velocity is half of the phase velocity.

Section C

(Long Answer Questions)

( )

Note: Answer any two questions. You have to delimit your each answer

maximum up to 400 words. Each question carries 03 marks. 2x 03= 06

: 02 | 400

03 2x 03= 06

1. In detail ,describe the simple pendulum as an anharmonic oscillator.

2. What do you mean by forced oscillations of coupled oscillator. If a periodic force F=F0cos is applied on the first pendulum along the length of spring,then discuss the resultant motion and its resonance.

F=F0cos

3. Obtain the expression for impedance of LCR series circuit. Explain the series resonance and quality factor for this circuit.

LCR

4. Derive the expression speed v = of longitudinal elastic waves in a solid rod.

v =

INTERNAL ASSIGNMENT

Program: BSc Ist Year

Subject:Physics

CourseName:ELECTROMAGNETISM

Course Code:PH-03 (Max. Marks 15)

Note: The Question paper is divided into three sections A, B, and C. Write Answers as per the given instruction.

A,B C

Section-A

Very Short Answer Type Questions(Compulsory)

()

Note: Answer all questions. As per the nature of the question you delimit your

answer in one word, one sentence or maximum up to 30 words. Each question carries 1/2 mark. 6x1/2=03

: , 30 6x1/2=03

1. Vector is given by . Write the curl in determinant form.

curl

2. Write the Laplaces equation in electrostatics.

3. Define electric dipole moment and write its SI units.

SI

4. Write the Maxwells second equation in integral and differential form.

5. A circuit has inductance L and resistance R in series with battery .What is the time constant for current growth for this circuit?

L R ?

6. Magnetic field lines makes closed loop. Is this statement is true?

?

Section-B

(Short Answer Questions)

( )

Note: Answer any 4 questions. Each answer should not exceed 100 words. Each

question carries 1 marks. 4x 1= 06

: 04 | 100

1 4x 1= 06

1. A surface m2 is placed in uniform electric field Volt/meter . Calculate the flux passing through the given surface.

m2 Volt/meter

2. Define the divergence of vector field.

()

3. Obtain the expression for torque acting on a electric dipole placed in an external electric field.

4. Explain the Bio Savarts law of magnetic field.

5. By using Amperes law,obtain the magnetic field inside the toroid.

Section C

(Long Answer Questions)

( )

Note: Answer any two questions. You have to delimit your each answer

maximum up to 400 words. Each question carries 03 marks. 2x 03= 06

: 02 | 400

03 2x 03= 06

1. Derive the expression for energy U = required to build up a uniformly charged solid sphere.

U =

2. Describe the following terms for dielectric medium

(a) Electric polarisation density P

(b) Electric displacement vector

(a) P

(b)

3. For dielectric medium obtain the expression for Clausius- Mossoti relation.

-

4. Explain in detail ,charging in RC circuit and derive the relation

RC

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