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A convex lens of glass has power P in air. If it is immersed in water its power will be :
A current loop in a magnetic field :
A current of 5 A is passing through a metallic wire of cross-sectional area 4 × 10-6 m2. If the density of the charge carriers in the wire is 5 × 1026 m-3, the drift velocity of the electrons is :
A current of 5 A is passing through a metallic wire of cross-sectional area 4 × 10^-6 m². If the density of the charge carriers in the wire is 5 × 10^26 m^-3, the drift velocity of the electrons is :
A cyclotron is used to obtain a 2 meV beam of protons. The alternating potential difference applied between the dees has a peak value of 20 kV and its frequency is 5 MHz. The intensity of magnetic field to be applied for resonance will be:
A detergent is a
A device which is used in our TV set, Computer, Radio set for storing the electric charge is
A dicot root shows
A dispersion indicates
A doctor advises a patient to take plenty of citrus fruits, guavas, tomatoes and amalas over a period of 2 months regularly. What do you think the patient is suffering from?