Question 1

Which type of electromagnetic wave has the longest wavelength?

Accepted Answer

Radio waves

Answer

Visible light

Answer

X-rays

Answer

Gamma rays

Question 2

Which type of electromagnetic wave has the shortest wavelength?

Accepted Answer

Gamma rays

Answer

Ultraviolet light

Answer

Infrared radiation

Answer

Microwaves

Question 3

Which electromagnetic wave has higher energy, X-rays or ultraviolet light?

Accepted Answer

X-rays

Answer

Infrared radiation

Answer

Ultraviolet light

Answer

Microwaves

Question 4

Which part of the electromagnetic spectrum is used for medical imaging, such as MRI scans?

Accepted Answer

Radio waves

Answer

Infrared radiation

Answer

X-rays

Answer

Ultraviolet light

Question 5

Which color of visible light has the longest wavelength?

Accepted Answer

Red

Answer

Yellow

Answer

Green

Answer

Blue

Question 6

Which color of visible light has the shortest wavelength?

Accepted Answer

Violet

Answer

Indigo

Answer

Green

Answer

Orange

Question 7

Which color of visible light has the highest frequency?

Accepted Answer

Violet

Answer

Blue

Answer

Red

Answer

Green

Question 8

What is the speed of light in a vacuum?

Accepted Answer

299,792,458 meters per second

Answer

1,000,000,000 meters per second

Answer

500,000,000 meters per second

Answer

150,000,000 meters per second

Question 9

What is frequency?

Accepted Answer

The number of occurrences of a repeating event per unit of time.

Answer

The distance between two points

Answer

The brightness of a light source

Answer

The intensity of a sound wave

Question 10

How is frequency measured?

Accepted Answer

In hertz (Hz)

Answer

In decibels (dB)

Answer

In seconds (s)

Answer

In meters per second (m/s)

Question 11

What is the relationship between frequency and wavelength?

Accepted Answer

They are inversely proportional.

Answer

They are proportional to time.

Answer

They are not related.

Answer

They are directly proportional.

Question 12

What is the symbol used to represent frequency?

Accepted Answer

f

Answer

v

Answer

T

Answer

λ

Question 13

What is Avogadro's number?

Accepted Answer

6.022x10^{23}

Answer

3.14159

Answer

1.602x10^{-19}

Answer

9.81

Question 14

What is the significance of Avogadro's number in chemistry?

Accepted Answer

It represents the number of entities in one mole of a substance

Answer

It determines the mass of an element

Answer

It measures the speed of chemical reactions

Answer

It indicates the volume of a gas at STP

Question 15

What is the value of the Planck constant?

Accepted Answer

6.62607015 x 10^-34 Js

Answer

2.99792458 x 10^8 m/s

Answer

3.14159265 x 10^10 C

Answer

9.80665 x 10^-1 N

Question 16

In physics, what does the symbol λ represent?

Accepted Answer

Wavelength

Answer

Speed of light

Answer

Frequency

Answer

Amplitude

Question 17

What is the typical wavelength of visible light in nanometers?

Accepted Answer

400-700

Answer

100-200

Answer

800-1000

Answer

3000-4000

Question 18

What is the wavelength of red light in nanometers?

Accepted Answer

around 700

Answer

around 900

Answer

around 400

Answer

around 500

Question 19

What is the wavelength of blue light in nanometers?

Accepted Answer

around 450

Answer

around 800

Answer

around 350

Answer

around 600

Question 20

What is the equation for calculating energy in the electromagnetic spectrum?

Accepted Answer

Answer

Answer

Answer

Question 21

What is the formula for calculating the speed of light in a vacuum?

Accepted Answer

<math>c = \lambda \cdot f</math>

Answer

<math>c = \frac{\lambda}{f}</math>

Answer

<math>c = \lambda + f</math>

Answer

<math>c = \frac{1}{\lambda \cdot f}</math>

Question 22

Which constant is represented by the symbol 'h' in the equation

E = hf

?

Accepted Answer

Planck's constant

Answer

Boltzmann constant

Answer

Gravitational constant

Answer

Coulomb's constant

Question 23

What does the 'f' represent in the equation

E = hf

when calculating energy in the electromagnetic spectrum?

Accepted Answer

Frequency

Answer

Force

Answer

Energy

Answer

Wavelength

Question 24

Which equation correctly expresses the energy of a photon if its wavelength is known?

Accepted Answer

<math>E = \frac{hc}{\lambda}</math>

Answer

<math>E = \lambda \cdot c</math>

Answer

<math>E = \frac{h}{\lambda \cdot c}</math>

Answer

<math>E = h \cdot \lambda</math>

Question 25

In the equation

E = hf

, what is the unit for the constant 'h' (Planck's constant)?

Accepted Answer

Joule-seconds

Answer

Watt-seconds

Answer

Newton-seconds

Answer

Joule-meters

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