Which of the following statements about various stages of core nuclear fusion (hydrogen, helium, carbon, and so on) in a high-mass star is not true?

A) Each successive stage lasts for approximately the same amount of time.
B) As each stage ends, the core shrinks and heats further.
C) Each successive stage creates an element with a higher atomic number and atomic mass number.
D) As each stage ends, the reactions that occurred in previous stages continue in shells around the core.


A) Each successive stage lasts for approximately the same amount of time.

Physics & Space Science

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A simple magnifier of refractive power 15.0 D is used to observe a beetle on a student’s desk. If the image of the beetle is twice as large as the beetle itself, where is the image formed relative to the lens?

A. 4.5 cm B. 8.3 cm C. 5.0 cm D. 3.6 cm E. 5.6 cm

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