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Answer the following question in detail.
How does magnifying power differ from linear or lateral magnification?
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Answer the following question in detail.
Derive an expression for the magnifying power of a simple microscope. Obtain its minimum and maximum values in terms of its focal length.
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Answer the following question in detail.
What is a terrestrial telescope and an astronomical telescope?
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Answer the following question in detail.
Obtain the expressions for magnifying power and the length of an astronomical telescope under normal adjustments.
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Answer the following question in detail.
What is the limitation in increasing the magnifying powers of a compound microscope?
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Answer the following question in detail.
What is the limitation in increasing the magnifying powers of a simple microscope?
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Answer the following question in detail.
What is the limitation in increasing the magnifying powers of the astronomical telescope?
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Answer the following question.
What is the unit of dipole moment?
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Answer briefly.
What is the modulation?
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What is meant by amplitude modulation?
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What is demodulation?
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What type of modulation is required for television broadcast?
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Why does amplitude modulation give noisy reception?
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Explain why is modulation needed.
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Answer the following question.
State the units of linear charge density.
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Two charges 5 μC and -4μC are kept 5.0 m apart at points A and B respectively. How much work will have to be done to move the charge at A through a distance of 5.0 m further away from point B along the line BA?
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Answer the following question.
While rotating an object or while opening a door or a water tap we apply a force or forces. Under which conditions is this process easy for us? Why? Define the vector quantity concerned. How does it differ for a single force and for two opposite forces with different lines of action?
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Answer the following question.
Why is the moment of a couple independent of the axis of rotation even if the axis is fixed?
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Answer the following question.
Explain the term 'steady state'.
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Answer the following question.
Define coefficient of thermal conductivity.
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