Nature of Light

Q.

What is light and what is its nature?

Q.

what is light and what is its nature

Q.

What color absorbs the most infra red radiation?

Q. What is the nature of light?

1. Light is a longitudinal wave.
2. Light does not have any nature
3. Nature of light cannot be determined
4. Light is a transverse, electromagnetic wave that can be seen by humans.

Q.

All objects reflect light.

1. True
2. False

Q.

What is the definition of light .

Is light a ray or wave or particles(photons).

Q. The path taken by light is

1. Quickest
2. Slowest
3. Impossible to tell
4. None of the above

Q. Light is the ___ that can be detected by the human eye.

1. electromagnetic radiation
2. longitudinal wave
3. pulse
4. electric field

Q.

What are the condition in which light will behave as a, wave particles or ray

Q.

Light needs a material medium to travel.

1. True
2. False

Q.

All the light falling on an opaque object is absorbed.

1. True
2. False

Q. Atmospheric refraction causes various cool phenomena that we see around us on daily basis. The refractive index depends on the density of the material and thus the refractive index of atmosphere decreases with height. This causes the light rays to bends toward the normal as it reaches the surface of the earth.
Based on the passage answer the given two questions:


(i) Which effect is seen during the sunrise and the sunset due to the bending of sunlight as it enters the earth’s atmosphere?
(A). Early sunrise
(B). Delayed sunrise
(C). Early sunset
(D). Delayed sunset

(ii) In an Arctic region object appears to float in the air and the phenomena is called looming. In this case the refractive index of the region closer to surface has ________ refractive index than that far above the surface.
(A). greater
(B). less
(C). the same
(D). infinite

Q.

When will light behave as wave , particles and ray?

Q. What are the conditions in which light will behave as a
1. Wave




​​​​2.Particle




3.Ray
​

Q. Light travels faster in an optically rarer medium.

1. False
2. True

Q. Light is the ___ that can be detected by the human eye.

1. Electromagnetic radiation
2. Longitudinal wave
3. None of these
4. Both A and B

Q. What do we need to see something?

1. 
   Source of light
2. 
   Eyes
3. 
   Reflection of light from that object
4. 
   All of the above

Q. 1) if a light ray undergoes reflection, does its frequency changes? 2) except changing the source of light, is there any other way to change the frequency of light?

Q. Light can behave as a ripple (wave) in a pond.

1. True
2. False

Q.

Which of these is the closest depiction of light?

1. 

2. 

3. Both (a) and (b)

4. 

Q.

A light-ray behaves as a ___

1. both particle and wave

2. particle

3. wave

4. Particle and wave nature depending on the situation

Q.

Ligh behaves as a:

1. wave

2. both particle and wave

3. Particle and wave nature depending on the situation

4. particle

Q. Assertion :The resolving power of an electron microscope is higher than that of an optical microscope. Reason: The wavelength of electron is more than the wavelength of visible light.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Light travels in a________between 2 points.

1. Straight line
2. Curved line
3. Zig zag line
4. All of the above

Q.

Which of these is the closest depiction of light?

1. 

2. 

3. 

4. 

Q.

A light-ray behaves ________.

1. as a particle

2. as a wave

3. neither as particle nor a wave

4. both as a particle or a wave depending on the situation

Q. When light rays passes from air into glass _________ remains constant.

1. direction
2. frequency
3. speed
4. wavelength

Q. For an inverted image, the height is taken as

1. positive
2. negative
3. zero
4. undefined

Q.

Light can be thought of which of the following to explain its various properties?

1. Wave

2. Particle

3. All of these

4. Ray

Q.

A light-ray behaves ________.

1. as a particle

2. as a wave

3. neither as particle nor a wave

4. both as a particle or a wave depending on the situation