Question

Dynamics is the study of
a) Movements of earth
(b) Movement of bodies
(c) Angles of bodies
(d) Forces acting on bodies
Which instrument is used to measure very
high temperature?
(a) Tachometer
(c) Udometer
(b) Pyrometer
(d) Lactometer
-8. Which of the following layer of atmosphere
make radio transmission possible?
(b) Troposphere
in Ionosphere
(d) Strato​

Answer 1

Explanation:

1) a

2) b

3) Trophoshpere