Chemistry
Chemistry
Sources and nature of light
Visible light
Reflection
100

Ca(OH)2+HCl → CaCl2+H2O

Ca(OH)2+2HCl → CaCl2+2H2O

100

Calcium Hydroxide+ Phosphorous acid→

calcium hydroxide+ phosphorous acid→ phosphorous calcium+ water

100

What's the speed of light?

300,000km/s

100

What are the colours in the visible light spectrum?

red, orange, yellow, green, blue, indigo, violet

100

A light ray strikes a plane mirror at a certain angle and reflects off the mirror. Which of the following options correctly describes the basic law of reflection?

A. The angle of reflection is equal to the angle of incidence.

B. The angle of reflection is greater than the angle of incidence.

C. The angle of reflection is less than the angle of incidence.

D. The reflected ray and the incident ray lie on the same straight line.

A

200

K3PO4+Ca(NO3)2 → KNO3+Ca3(PO4)2

2K3PO4+3Ca(NO3)2 → 6KNO3+Ca3(PO4)2

200

chloric acid +strontium hydroxide→

chloric acid +strontium hydroxide→ strontium chloric+ water

200

If in a vacuum what travel as the same speed of light?

Electromagnatic waves

200

What colour of visible light have less energy than the green light?

red, orange, yellow

200

In a certain scenario, a beam of light strikes a plane mirror perpendicularly. Which of the following options correctly describes the behavior of the reflected ray?

A. The reflected ray coincides with the incident ray and returns along the original path.

B. The reflected ray deviates from the incident ray, forming an acute angle.

C. The reflected ray deviates from the incident ray, forming an obtuse angle.

D. The reflected ray is in the opposite direction of the incident ray, forming a 180-degree angle.

A

300

BaCl2+H2SO4→ 

BaCl2+H2SO4 → BaSO4+2HCl

300

sulfuric acid+ potassium hydroxide→

sulfuric acid+ potassium hydroxide→ potasslum sulfate+ water

300

Which of the seven types of electromagnatic waves has the least energy?

radio waves

300

What's the wavelength range of red light?

About 620-700 nanometers.

300

Reflection is the phenomenon where light waves or sound waves return to the original medium after encountering an obstacle. Which of the following best describes the phenomenon of reflection?

A. Refraction of light waves between different media  

B. Absorption of light waves during propagation  

C. Light waves returning to the original medium after encountering an obstacle  

D. Scattering of light waves while propagating through a medium.

C

400

Pb(NO3)2+KI → PbI2+KNO3

Pb(NO3)2+2KI → PbI2+2KNO3

400

What is used in a microscope to magnify the object being observed?

Objective and eyepiece.

400

Which part of the electromagnetic spectrum is visible light?

Between infrared and ultraviolet.

400

The law of reflection states that the angle of incidence equals the angle of reflection. Which of the following correctly describes the law of reflection?

A. The angle of incidence equals the angle of refraction B. The angle of incidence equals the angle of reflection C. The angle of incidence is greater than the angle of reflection  

D. The angle of incidence is less than the angle of reflection  

B

500

Na2SO4+Ba(NO3)2 → 

Na2SO4+Ba(NO3)2 → BaSO4+2NaNO3

500

In what fields is light used?

Just be reasonable.

500

How are the rainbows formed?

Refraction, reflection and scattering of light.

500

Which of the following describes the characteristics of image formation in a plane mirror?

A. The image forms in front of the mirror and is real 

B. The image forms behind the mirror and is virtual 

C. The image forms in front of the mirror and is virtual D. The image forms behind the mirror and is real  

B

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