Atoms Test

Directions For Questions

A Geiger counter detects radiation such as Beta particles by using the fact that the radiation ionizes the air along its path. A thin wire lies on the axis of a hollow metal cylinder and is insulated from it (34.17). A large potential difference is established between the wire and outer cylinder, with the wire at higher potential, this sets up a strong electric field directed radially outward. When ionizing radiation enters the device, it ionizes a few air molecules. The free electrons produced are accelerated by the electric field toward the wire and, on the way there, ionize many more air molecules. Thus, a current pulse is produced that can be detected by appropriate electronic circuitry and converted to an audible "click". Suppose the radius of the central wire is $$145 \mu m$$ and the radius of the hollow cylinder is $$1.80cm$$

...view full instructions

The potential difference between the wire and the cylinder produces an electric field of $$2\times10^{4} Vm^{-1}$$ at a distance of $$1.2 cm$$ from the wire

Atoms Test - 31...

Question 1

Zeeman effect

Stark effect

Lande's splitting

nuclear magnetic spin

Question 2

$$360 V$$

$$180 V$$

$$200 V$$

$$240 V$$

Question 3

Photon

Graviton

Proton

Meson

Question 4

$$a_{0}$$ = $$4r$$

$$a_{0}$$ =$$8r$$

$$a_{0}$$ = $$2r$$

$$a_{0}$$ = $$\displaystyle\ \frac{r}{4}$$

Question 5

Question 6

Energy of a state is doubled

Radius of an orbit is doubled

Velocity of electrons in the orbit is doubled

Radius of an orbit is quadrupled.

Question 7

$$1:2$$

$$4:1$$

$$1:4$$

$$8:1$$

Question 8

$$3$$

$$6$$

$$5$$

$$2$$

Question 9

$$L = \displaystyle\frac{h}{\pi}$$

$$L = \displaystyle\frac{4h}{\pi}$$

$$L = \displaystyle\frac{3h}{\pi}$$

$$L = \displaystyle\frac{5h}{\pi}$$

Question 10

$$l=4$$

$$l=3$$

$$l=2$$

$$l=1$$

User

Question Analysis

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.