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science
Grade-9
Easy
Question
According to Rutherford, α-particles gets deflected by:
Large amount
Sometimes large, sometimes small
Sometimes small
Very small amount
Hint:
Alpha particles are deflected by a magnetic field confirming that they must carry a charge. The direction of deflection which can be determined by Fleming's left hand rule demonstrates that they must be positively charged.
The correct answer is: Large amount
In Rutherford's α-particle scattering experiment, most of the α-particles were deflected by nearly 1800. Reason: The positive charge of the atom is spread throughout the atom that repelled and deflected the positively charged α-particles.