(c) Chadwick
(d) Newton
Ans: (c)
174. For a particle revolving in a circular path the acceleration of the particle
is: [NDA 2010]
(a) along the tangent
(b) along the radius
(c) zero
(d) along the circumference of the circle
Ans: (b)
175. The size of the atomic nucleus is in the order of : [RRB ASM/GG 2004]
(a) 10-10 meter
(b) 10-9 meter
(c) 10-3 meter
(d) 10-15 meter
Ans: (d)
176. Who was the inventor of positron? [RRB ASM 2004]
(a) Rutherford
(b) J.J. Thomson
(c) Chadwick
(d) Anderson
Ans: (d)
177. The antiparticle of the electron is called:
(a) positron
(b) neutrino
(c) meson
(d) antineutrino
Ans: (a)
178. Who was the inventor of neutrino?
(a) Pauli
(b) Fermi
(c) Anderson
179