Physics Radiocarbon is produced in the atmosphere as a result of Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere. Action of ultraviolet light from the sun on atmospheric oxygen. Collision between fast neutrons and nitrogen nuclei present in the atmosphere. Lightning discharge in atmosphere. Action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere. Action of ultraviolet light from the sun on atmospheric oxygen. Collision between fast neutrons and nitrogen nuclei present in the atmosphere. Lightning discharge in atmosphere. ANSWER DOWNLOAD EXAMIANS APP
Physics When two semiconductors of pand n-type are brought in contact, they form p-n junction which acts like a/an Rectifier Oscillator Amplifier Conductor Rectifier Oscillator Amplifier Conductor ANSWER DOWNLOAD EXAMIANS APP
Physics Acceleration is the rate of change of Velocity Jounce Speed Jerk Velocity Jounce Speed Jerk ANSWER DOWNLOAD EXAMIANS APP
Physics When a number of resistors are connected in series in a circuit, the value of current: Increases Becomes half Remains the same Decreases Increases Becomes half Remains the same Decreases ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following determines the sharpness of image in a camera ? Size of the camera The focal length of the lens The exposure time The aperture Size of the camera The focal length of the lens The exposure time The aperture ANSWER DOWNLOAD EXAMIANS APP
Physics What type of force acts on a car moving around a curve? Centrifugal force Centripetal force Cohesive force Gravitational force Centrifugal force Centripetal force Cohesive force Gravitational force ANSWER DOWNLOAD EXAMIANS APP
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