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Q. Convex lenses are used for the correction of
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Q. The repulsion-start induction-run motor is used because of ?
Q. What type of heat transfer is boiling water?
Q. The min. number of geostationary satellites needed for uninterrupted global coverage is:
Q. Parabolic mirrors are used in
Q. The ______ is responsible for Earth's magnetic field.
Q. Which among the following is the most common cause of Sunburn?
Q. The cover of a solar cooker is made of glass because
Q. Beta rays emitted by a radioactive material are
Q. The heat required to raise the temperature of body by 1K is called
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