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Sunday 5 July 2015

penetrating power of rays

Post 216
Question 5 In an observation, alpha - particles, beta-particles and gamma-rays have same energies. Their penetrating power in the givn medium in increasing order will be
A) alpha, beta, gamma
B)beta,gamma, alpha
C) alpha,gamma, beta
D) beta,alpha,gamma
Answer:  alpha, beta, gamma
Explanation: gamma is the most penetrating ray then come the beta particles which contains more penetration power than alpha particles.

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