Reflection of Light - Class X
Comprehensive quiz covering reflection terminology, laws of reflection, and properties of plane mirrors for class-X physics
Questions
The phenomenon of light coming back after hitting a smooth plane surface is:
- reflection
- refraction
- dispersion
- total internal reflection
.......... occurs when a light ray bounces back from a barrier.
- Refraction
- Reflection
- Dispersion
- Scattering
A ray of light which bounces off the surface of mirror is called :
- Normal
- Incident ray
- Reflected ray
- Irregular ray
Who amongst the following used corpuscular theory to explain reflection and refraction of light ?
- Newton
- Maxwell
- Young
- Hertz
A perpendicular drawn at the point of incidence of a light ray on the surface of a mirror is called -
- incident ray
- reflected ray
- normal
- none of these
- True
- False
When light moving in one medium falls at the surface of another medium, _______ light returns back to the same medium.
- all of
- a part of
- no
- either all or no
The light ray which comes out from the surface after reflection is called:
- incident ray
- reflected ray
- normal ray
- emergent ray
- True
- False
When a beam of light, from an object, appears to meet at a point after reflection from a mirror, then the image formed is known as :
- real image
- virtual image
- incident image
- all of the above
The perpendicular drawn to the surface of the mirror at the point of incidence is known as:
- reflected ray
- refracted ray
- incident ray
- normal ray
- right, left
- left, left
- right, right
- left, right
One feature of image formed by plane mirrors is lateral inversion which means:
- the top part of the image appears downward and vice versa
- left and right sides of the image are interchanged
- image appears inverted both sideways and upside down
- all the above
Reflection can occur on :
- transparent surfaces
- glass
- opaque surfaces
- a and b
No matter how far you stand from a mirror, your image always appears erect. Then the mirror among the following is likely to be:
- a plane mirror
- a concave mirror
- any type of mirror
- none of the above
Fill in the blanks to complete the following sentences:
i) A ray travelling towards the mirror is the _________.
ii) Angle between reflected ray and normal is the _________.
iii) The angle between reflecting surface and the reflected ray is the _________.
- i-incident ray ,ii-angle of reflection ,iii-glancing angle of reflection
- i-normal ray ,ii-glancing angle of reflection ,iii-angle of incidence
- i-reflected ray ,ii glancing angle of incidence ,iii-glancing angle of reflection
- i-reflected ray ,ii-angle of incidence ,iii- angle of reflection
- normal ray, point of reflection
- reflected ray, point of refraction
- reflected ray, point of incidence
- diffracted ray, point of diffraction
- decreases
- increases
- remains same
- becomes zero
- increases
- remains same
- decreases
- becomes infinite
Bouncing of light into the same medium, from which the light ray is incident, is termed as
- Refraction
- Diffraction
- Reflection
- Scattering
Reflection can occur on
- Transparent surfaces
- Translucent surfaces
- Opaque surfaces
- B and C
Which of the following is the main reason of Opacity of light waves.
- reflection
- absorption
- refraction
- diffusion
- transmission
A ray of light striking a plane mirror at an angle of 35 degrees with the normal.
- 35 degrees.
- 55 degrees.
- 10 degrees
- 90 degrees
- 125 degrees
When a light ray falls on a perfectly reflective mirror at an angle. Identify which of the following statement is true about the ray?
- The frequency of the light ray changes
- The wavelength of the light ray changes
- The velocity of the light ray changes
- The period of the light ray changes
- The direction of motion of the light ray changes
Identify on which of the following, specular reflection would most likely to occur.
- mirror
- wall
- sheet of paper
- ceiling.
- cat's fur
In which of the following conditions diffuse reflection takes place?
- When a parallel beam of light is reflected by a plane mirror.
- When a parallel beam of light is reflected by a highly polished metal surface.
- When a parallel beam of light is reflected by a paper sheet.
- All of these
A person has a $18$cm wide face and his two eyes are separated by 8 cm.Find the minimum width of a mirror required for the person to view is face laterally is
- $9$cm
- $4$cm
- $5$cm
- $13$cm
A beam of light converges at point $P$. Now, a plane mirror is placed $20 \mathrm { cm }$ before the converging point $P$. The new converging point is
- $20 \mathrm { cm }$ infront of the mirror
- $20 \mathrm { cm }$ behind the mirror
- The separation between new converging point and previous converging point is $40 \mathrm { cm } $
- None of the above
The deviation produced by the first plane mirror during the first reflection is
- $\delta _ { 1 } = 0 ^ { \circ }$
- $\delta _ { 1 } = 100 ^ { \circ }$ clockwise
- $\delta _ { 1 } = 100 ^ { \circ }$ anticlockwise
- $\delta _ { 1 } = 280 ^ { \circ }$ clockwise
What is the correct definition of reflectance?
- Difference between amount of light absorbed by the surface and amount of light reflected.
- The amount of light reflected by a surface is known as reflectance.
- The ratio of the amount of the light reflected from a surface to the amount of light falling on the surface is called reflectance.
- The ratio of amount of light falling on a surface to the amount of light reflected on the surface is called reflectance.
The angle formed between the incident ray and the normal is called _____________
- angle of incidence
- angle of reflection
- angle of refraction
- none of the above
When light rays travelling from one medium fall at the surface of another medium ............ the light rays returns back to the same medium.
- All of
- Part of
- None of
- Can't be determined