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HSC Science (Electronics) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions

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The integral multiple of fundamental frequencies are ______ 

[6] Superposition of Waves
Chapter: [6] Superposition of Waves
Concept: undefined >> undefined

What are beats?

[7] Wave Motion
Chapter: [7] Wave Motion
Concept: undefined >> undefined

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What are harmonics? 

[6] Superposition of Waves
Chapter: [6] Superposition of Waves
Concept: undefined >> undefined

What are overtones?

[6] Superposition of Waves
Chapter: [6] Superposition of Waves
Concept: undefined >> undefined

A violin string vibrates with the fundamental frequency of 510 Hz. What is the frequency of the first overtone? 

[6] Superposition of Waves
Chapter: [6] Superposition of Waves
Concept: undefined >> undefined

Distinguish between an overtone and harmonic. 

[6] Superposition of Waves
Chapter: [6] Superposition of Waves
Concept: undefined >> undefined

State any four applications of beats.

[7] Wave Motion
Chapter: [7] Wave Motion
Concept: undefined >> undefined

The equation of simple harmonic progressive wave is, y = sin π/2 (4t/0.025 – x/0.25). Where all quantities are in the S.I. system. Find the amplitude, frequency, wavelength, and velocity of the wave.

[6] Superposition of Waves
Chapter: [6] Superposition of Waves
Concept: undefined >> undefined

Explain the production of beats and deduce analytically the expression for beats frequency.

[7] Wave Motion
Chapter: [7] Wave Motion
Concept: undefined >> undefined

Define the work function of the metal. 

[14] Dual Nature of Radiation and Matter
Chapter: [14] Dual Nature of Radiation and Matter
Concept: undefined >> undefined

Explain the term ‘wave-particle duality' of matter.  

[14] Dual Nature of Radiation and Matter
Chapter: [14] Dual Nature of Radiation and Matter
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What are the limitations of the first law of thermodynamics?

[4] Thermodynamics
Chapter: [4] Thermodynamics
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The molar specific heat of an ideal gas at constant pressure and constant volume is 'Cp' and 'Cv' respectively. If 'R' is the universal gas constant and the ratio 'Cp' to 'Cv' is 'γ' then CV = ______.

[3] Kinetic Theory of Gases and Radiation
Chapter: [3] Kinetic Theory of Gases and Radiation
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Give any two types of a thermodynamic process.

[4] Thermodynamics
Chapter: [4] Thermodynamics
Concept: undefined >> undefined

An electron in an atom is revolving round the nucleus in a circular orbit of radius 5.3 × 10-11 m with a speed of 3 × 106 m/s. Find the angular momentum of electron.

[1] Rotational Dynamics
Chapter: [1] Rotational Dynamics
Concept: undefined >> undefined

The difference between the two molar specific heats of gas is 9000 J/kg K. If the ratio of the two specific heats is 1.5, calculate the two molar specific heats.

[3] Kinetic Theory of Gases and Radiation
Chapter: [3] Kinetic Theory of Gases and Radiation
Concept: undefined >> undefined

Prove that the frequency of beats is equal to the difference between the frequencies of the two sound notes giving rise to beats.

[7] Wave Motion
Chapter: [7] Wave Motion
Concept: undefined >> undefined

Define Capacitive reactance.

[13] AC Circuits
Chapter: [13] AC Circuits
Concept: undefined >> undefined

Two tuning forks of frequencies 320 Hz and 340 Hz are sounded together to produce a sound wave. The velocity of sound in air is 326.4 m/s. Calculate the difference in wavelengths of these waves.

[7] Wave Motion
Chapter: [7] Wave Motion
Concept: undefined >> undefined

Explain why velocity increases when water flowing in a broad pipe enters a narrower pipe. A sonometer wire, 36 cm long, vibrates with a frequency of 288 Hz in the fundamental mode when it is under a tension of 24.5 N. Calculate the linear density of the material of the wire

[6] Superposition of Waves
Chapter: [6] Superposition of Waves
Concept: undefined >> undefined
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