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After the tremendous success of our last year Important Questions Bank for Tamil Nadu HSC (12th Std) Board Exam 2017 and 2018 we have also created a list of Important Question Bank for Tamil Nadu (12th Std) HSC Board Exam 2019 which are likely to appear in HSC Board Exams this year.
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- What are the conditions to achieve laser action?
- What are the applications of CRO?
- Why the sky appears blue in colour?
- Describe J.J.Thomson’s method for determining the specific charge of an electron.
- Distinguish between electric power and electric energy
- Describe photoelectric cell and explain its working
- What is eddy current? How will you reduce the eddy current?
- What is an operational amplifier? Explain its working as an inverting amplifier?
- Obtain an expression for the current in an AC circuit containing a pure inductance only. Find the phase relationship between voltage and current. Draw the necessary graph.
- According to Bohr’s hypothesis calculate the de-Broglie wavelength of electron in n=1 in hydrogen atom. Compare the wavelength to its circumference of circular orbit.
- On the basis of wave theory, explain total internal reflection. Write the conditions for total internal reflection to take place.
- What is an electrical dipole? Derive an expression for the electric field due to an electric dipole at a point along the equatorial line.
- What is a nuclear reactor? Explain the functions of moderator, control rods and neutron reflector. Also mention two uses of a nuclear reactor.
- Draw the block diagram of Amplitude modulated transmitter.
- On the basis of wave theory explain total internal reflection
- State and explain Kirchhoff’s voltage law for electrical networks.
- Obtain an expression for magnetic induction due to an infinitely long straight conductor carrying current.
- What is rectification? Explain the bridge rectifier
- Mention any five properties of X-rays
- Write the properties of beta rays.
- State De-Morgan’s theorems.
- What is superconductivity?
- Write the merits of satellite communication.
- explain the conversion of a galvanometer into an ammeter
- Explain the working of Leclanche cell with a diagram
- Write the properties of canal rays.
- state and verify Faraday’s second law of electrolysis
- Explain the principle, construction and working of Geiger-Muller counter.
- Write the laws of photoelectric emission
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