Which of the properties of radioisotopes make them useful as tracers in medical or agricultural applications?

I. Their chemical behaviour is the same as non-radioactive isotope

II. They emit various types of radiation

III. The nuclear reaction is unaffected by the chemical state of the isotope

a)

I only

b)

I and III

c)

I and II

d)

All of these

Question

Question ID - 101869 :-

Which of the properties of radioisotopes make them useful as tracers in medical or agricultural applications?

I. Their chemical behaviour is the same as non-radioactive isotope

II. They emit various types of radiation

III. The nuclear reaction is unaffected by the chemical state of the isotope

a)

I only

b)

I and III

c)

I and II

d)

All of these

1 Answer

5876 Votes

score 3537 · Accepted Answer

Answer Key : (d) -

(d)

I, II and III are true

A certain metal when irradiated to light ) emits photoelectrons with twice kinetic energy as did photoelectrons when the same metal is irradiated by light Hz) The (threshold frequency) of metal is
a)	Hz	b)	Hz	c)	Hz	d)	Hz