Which of the following provides an instantaneous measure of radioactivity: 1 scintillation counter2. geiger counter3. film-badge dosimeterb onlyb and c onlya and b onlya, b, and c

A and B only

Explanation:

Both Scintillation counter and Geiger counter are used  for instantaneous measures of radioactivity.

Both are used to detect and quantify the amount of radiation. GM counter can detect all kind of radiation that alpha, beta and gamma radiation. Whereas  Scintillation counter can detect only ionization radiation.

1.solid

2.carbon dioxide

3.helium