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XII BOARDS PREVIOUS YEAR-XII BOARDS-SECTION-A
- A beam of unpolarised light is incident, on the boundary between two t...
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- Define the activity of a radionuclide. Write its SI unit. Give a plot ...
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- Name the two basic modes of communication system.
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- A charge q is moved from a point A above a dipole moment p to a point...
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- In what way is the behaviour of a diamagnetic material different from ...
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- Essential elements of a communication system are
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- How can we explain the reddish appearance of sun at sunrise or sunset?...
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- The plot of the variation of potential difference across a combination...
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- Draw a plot showing variation of electric field with distance from th...
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- State one factor which determines the intensity of light in the photon...
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- An iron-cored solenoid has self- inductance. 2.8 H. When the core is r...
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- An object is kept in front of a concave lens.What is the nature of the...
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- When light travels from a rarer to denser medium, it loses some speed....
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- A point charge +Q is placed in the vicinity of a conducting surface. D...
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- Define modulation index. Why is it generally kept less than one ?
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- In the figure given, mark the polarity of plates A and B of a capacito...
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- The objective lenses of two telescope have the same apertures but thei...
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- Define the conductivity of a conductor. Write its SI unit
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- Nichrome and copper wires of same length and same radius are connected...
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- Do electromagnetic waves carry energy and momentum?
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