for more:
,for more:
, 3
3 A radioactive source emits gamma radiation.
Which row shows what happens to the charge and mass number of a nucleus of the radioactive
source when gamma radiation is emitted?
Charge Mass number
A decreases stays the same
B decreases decreases
C stays the same decreases
D stays the same stays the same
Your answer [1]
4 The frequency of a microwave is 450 000 000 Hz.
What is the correct value of the frequency when converted to MHz?
A 4.5 MHz
B 45 MHz
C 450 MHz
D 450 000 MHz
Your answer [1]
© Cambridge OCR 2026 Turn over
for more:
,for more:
, 3
3 A radioactive source emits gamma radiation.
Which row shows what happens to the charge and mass number of a nucleus of the radioactive
source when gamma radiation is emitted?
Charge Mass number
A decreases stays the same
B decreases decreases
C stays the same decreases
D stays the same stays the same
Your answer [1]
4 The frequency of a microwave is 450 000 000 Hz.
What is the correct value of the frequency when converted to MHz?
A 4.5 MHz
B 45 MHz
C 450 MHz
D 450 000 MHz
Your answer [1]
© Cambridge OCR 2026 Turn over
for more:
