Physics College

10 POINTS
Which type of electromagnetic radiation is used in airport security screening?
O A. X-rays
• B. Ultraviolet radiation
• C. Gamma rays
O D. Infrared radiation
SUBMIT

10 POINTSWhich Type Of Electromagnetic Radiation Is Used In Airport Security Screening?O A. X-rays B.

Answers

Answer 1

Answer:

A) X-rays

Explanation:

Airport security screenings use X-rays because they can penetrate through bags to see objects that are located within that are obscured through normal view.

Answer 2

X- rays are used to  test  body in airports. Low energy waves are used to screen baggages and human body. Thus option A is correct.

What is electromagnetic radiation ?

Electromagnetic spectrum is the arrangement of radiations in the order of decreasing wavelength or increasing energy and frequency. The order is radio waves, microwaves, infrared, visible, ultraviolet, x-rays and gamma rays.

x -rays are highly energetic short waves which can be easily penetrate through a body. X-ray is used in different diagnostic techniques. X-rays easily penetrate through  tissues and provide the scanned images of internal parts.

In airport security screening x-rays are used to screen baggages and human bodies. High energetic waves are causing serious health risks. Hence, lower energy x-rays are used in testing.

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Related Questions

A boat sails for 80 minutes and travels 3.6km. What was its average speed in m/s?

Answers

Answer:

Explanation:

The average speed of the boat:

[tex]\bar{v}=\frac{s}{t}=\frac{3.6}{80}=0.045[/tex] km/min

But if you want to change the unit into m/s, you only take this way:

[tex]0.045 \frac{km}{min}=\frac{0.045\times 1000}{60}=0.75[/tex] in m/s.

The average speed of the boat will be approximately 0.75 m/s.

What is Average speed?

Average speed is the rate of change of change of distance covered with time.

Given is a boat that sails for 80 minutes and travels 3.6 Km.

Distance covered by the boat [ΔD] = 3.6 Km = 3600 m

Time taken [Δt] = 80 minutes = 80 x 60 = 4800 s

Now, we can calculate the average speed using the formula -

s = ΔD/Δt

s = 3600/4800

s = 36/48

s = 0.75 m/s

Therefore, the average speed of the boat will be approximately 0.75 m/s.

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A 75-W light bulb is turned on. It has an operating voltage of 120 V. (A)How much current flows through the bulb? (B)What is the resistance of the bulb? (C)How much energy is used each second?

Answers

Required Answer:

Given:

Power (P) = 75 W Voltage (V) = 120 V

(A)

As we know that,

I = P/V

↠ Current = 75/120

↠ Current = 0.625 A

(B)

R = V/I

Here,

R is resistanceV is Voltage, and I is current

↠ Resistance = 120/0.625

↠ Resistance = 192 Ω

(C)

Energy = P × t

Here,

P is power T is time

↠ Energy = 75 × 1

↠ Energy = 75 J

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