Q1.
(a) Stress;
(i) Strain
(ii) Young's Modulus
(iii) Modulus of rigidity
(iv) Show that work done per unit volume of stretching the wire is equal to 1/2 (stress × strain).
Explain the terms:
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(a) Stress;
(i) Strain
(ii) Young's Modulus
(iii) Modulus of rigidity
(iv) Show that work done per unit volume of stretching the wire is equal to 1/2 (stress × strain).
()
Explain the terms: (a) Stress
(i) Strain
(ii) Young's Modulus
(iii) Modulus of rigidity
(iv) Show that work done per unit volume of stretching the wire is equal to 1/2 (stress × strain). State and explain Zeroth, First and Second law of thermodynamics giving suitable examples.
()
(b) 20 marks
Q2.
(a) Answer the following sub-questions : Explain the terms: Stress
(i) Strain
(ii) Young's Modulus
(iii) Modulus of rigidity
(iv) Show that workdone per unit volume of stretching the wire is equal to 1/2 (stress × strain).
()
Describe in brief: Damped vibrations and Forced vibrations. Explain the concept of resonance with example. Explain in detail platinum wire thermometer. What are advantages of platinum wire thermometer over gas thermometer.
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Explain the concept of resonance with example.
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Explain in detail platinum wire thermometer.
()
What are advantages of platinum wire thermometer over gas thermometer.
-
(a)
Answer the following sub-questions : Explain the terms: Stress
-
(b)
State and explain Zeroth, First and Second law of thermodynamics giving suitable examples. Answer the following sub-questions:
Q2.
(a) Answer the following sub-questions : Explain the terms: Stress
(i) Strain
(ii) Young's Modulus
(iii) Modulus of rigidity
(iv) Show that workdone per unit volume of stretching the wire is equal to 1/2 (stress × strain).
(a)
Answer the following sub-questions : Explain the terms: Stress
(i) Strain
(ii) Young's Modulus
(iii) Modulus of rigidity
(iv) Show that workdone per unit volume of stretching the wire is equal to 1/2 (stress × strain).
(b)
State and explain Zeroth, First and Second law of thermodynamics giving suitable examples. Answer the following sub-questions:
3. Describe in brief : Damped vibrations and Forced vibrations. Explain the concept (a) of resonance with example. Explain in detail platinum wire thermometer. What are advantages of platinum (b) wire thermometer over gas thermometer. SECTION - B Answer the following sub-questions :
4. With neat diagram, explain construction and working of He-Ne gas laser. (a) Explain the terms : (b) Electric intensity (\overlineE)
(i) Dielectric polarisation (P)
(ii) (iii) Electric displacement (D) Dielectric Constant (K)
(iv) and Electric susceptibility
(x) .
(v) Obtain relation between Electric displacement (\overlineD), Electric intensity (\overlineE) and Electric polarisation (\overlineP)
(c)
Briefly describe Diamagnetism, Paramagnetism and Ferromagnetism. Give examples of each.
-
(a)
Answer the following sub-questions : Explain the terms: Stress
-
(b)
State and explain Zeroth, First and Second law of thermodynamics giving suitable examples. Answer the following sub-questions:
Q3.
With neat diagram, explain construction and working of He-Ne gas laser. 10
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With neat diagram, explain construction and working of He-Ne gas laser. 10 (a) Explain the terms: (b) Electric intensity Ē
(i) Dielectric polarisation P
(ii)
(iii) Electric displacement D, Dielectric Constant K
(iv) and Electric susceptibility χ.
(v) Obtain relation between Electric displacement (D̄), Electric intensity (Ē) and Electric polarisation (P̄). Briefly describe Diamagnetism, Paramagnetism and Ferromagnetism.
(c) Give examples of each.
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(a) Explain the terms: Electric intensity Ē;
(i) Dielectric polarisation P;
(ii) Electric displacement D;
(iii) Dielectric Constant K;
(iv) Electric susceptibility χ.
()
(v) Obtain relation between D̄, Ē and P̄.
()
Briefly describe Diamagnetism, Paramagnetism and Ferromagnetism.
()
(c) Give examples of each.
-
(c)
Give examples of each.
-
(a)
Explain the terms: Electric intensity Ē;
-
(c)
Give examples of each.
Q4.
(a) Explain the terms.
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(a) Explain the terms.
()
(b) Electric intensity Ē;
(i) Dielectric polarisation P;
(ii) Electric displacement D;
(iii) Dielectric Constant K;
(iv) Electric susceptibility χ.
()
(v) Relationship between D̄, Ē and P̄.
(a)
Explain the terms:
(b)
Electric intensity Ē
(i) Dielectric polarisation P
(ii) (iii) Electric displacement D, Dielectric Constant K,
(iv) Electric susceptibility χ.
(v) Obtain relation between Electric displacement (D̄), Electric intensity (Ē) and Electric polarisation (P̄).
-
(a)
Explain the terms.
-
(b)
Electric intensity Ē;
-
(a)
Explain the terms:
-
(b)
Electric intensity Ē
