AP 7th Class Science Bits Chapter 9 Reflection of Light with Answers

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AP State Syllabus 7th Class Science Bits 9th Lesson Reflection of Light with Answers

Choose the correct answer.

Question 1.
Image of an object in a plane mirror is
A) red
B) inverted
C) small
D) virtual
Answer:
D) virtual

Question 2.
Ray of light falling on the mirror is
A) reflected ray
B) refracted ray
C) deviated ray
D) incident ray
Answer:
D) incident ray

Question 3.
Angle of incidence
A) Angle of reflection
B) Angle of refraction
C) Angle of deviation
D) All the above
Answer:
A) Angle of reflection

Question 4.
Distances of the object and image are ……….. in a plane mirror.
A) unequal
B) equal
C) may be equal or unequal
D) none of the above
Answer:
B) equal

Question 5.
Army people use this
A) Kaleidoscope
B) Spectroscope
C) Periscope
D) All the above
Answer:
C) Periscope

Question 6.
This is observed in a plane mirror
A) inverted image
B) small image
C) lateral inversion
D) All the above
Answer:
C) lateral inversion

Question 7.
Number of images formed when the object is placed in between the mirrors arranged at an angle of 90°
A) 3
B) 4
C) 5
D) 6
Answer:
A) 3

Question 8.
Mirror used as a rearview mirror
A) Concave
B) Spherical
C) Plane
D) Convex
Answer:
D) Convex

Question 9.
Mirror used by Dentists
A) Convex
B) Concave
C) Plane
D) Spherical
Answer:
B) Concave

Question 10.
Mirror behind the bulb in a car headlight
A) Concave
B) Convex
C) Plane
D) None
Answer:
A) Concave

Question 11.
The ray of light falling on the mirror is called the
A) Incident ray
B) Reflected ray
C) Refracted ray
D) All of these
Answer:
A) Incident ray

Question 12.
The ray of light returning from the mirror is called
A) Incident ray
B) Reflected ray
C) Refracted ray
D) All of these
Answer:
B) Reflected ray

Question 13.
The angle between the normal and the reflected ray is called
A) Angle of reflection
B) Angle of incidence
C) Angle of refraction
D) Angle of circulation
Answer:
A) Angle of reflection

Question 14.
The angle between the normal and the incident ray is called
A) Angle of reflection
B) Angle of incidence
C) Angle of refraction
D) Angle of circulation
Answer:
B) Angle of incidence

Question 15.
Relationship between angle of incidence and the angle of reflection is
A) Equal
B) Not equal
C) Directly proportionate
D) Indirectly proportionate
Answer:
A) Equal

Question 16.
If the angle of incidence is 20° with the normal, what will be the angle of reflection?
A) 20°
B) 40°
C) 70°
D) 90°
Answer:
A) 20°

Question 17.
The mirrors in periscope are kept ………. to each other.
A) Horizontal
B) Vertical
C) Parallel
D) Linear
Answer:
C) Parallel

Question 18.
In a mirror right of an object appears
A) Reverse
B) Right
C) Top
D) Left
Answer:
D) Left

Question 19.
Number of mirrors required to provide multi images
A) 3
B) 5
C) 2
D) 6
Answer:
C) 2

Question 20.
Number of images formed by the arrangement of plane mirrors with the angle of 60
A) 6
B) 7
C) 8
D) 5
Answer:
D) 5

Question 21.
Rear view mirror made of
A) Concave mirror
B) Convex
C) Plane
D) Any one of these
Answer:
A) Concave mirror

Question 22.
Dentist usually use ………… mirror.
A) Concave
B) Convex
C) Plane
D) All of these
Answer:
B) Convex

Question 23.
Image on curved shining surface of inner portion is
A) Straight image
B) Mirror image
C) Reverse image
D) Irregular image
Answer:
C) Reverse image

Question 24.
Outer portion of spoon acts as a ………… mirror.
A) Concave
B) Convex
C) Plane
D) Irregular
Answer:
B) Convex

Question 25.
Clear images formed by ……………. reflection
A) Irregular
B) Diffused
C) Reverse
D) Regular
Answer:
D) Regular

Question 26.
The number of images increased by the ………… of angle between two plane mirrors.
A) Increase
B) Reduction
C) Increase or decrease
D) None of these
Answer:
B) Reduction

Question 27.
In a ………… mirror we get diminished image of the object.
A) Concave
B) Plane
C) Rough
D) Convex
Answer:
D) Convex

Question 28.
The image that can be obtained on a screen is called a
A) Virtual image
B) Reversed image
C) Enlarged image
D) Real image
Answer:
D) Real image

Question 29.
Reflection from a smooth surface is called reflection
A) Irregular
B) Reverse
C) Regular
D) Irrespective
Answer:
C) Regular

Question 30.
The image that can be viewed only in the mirror called
A) Virtual image
B) Reversed image
C) Enlarged image
D) Real image
Answer:
A) Virtual image

Question 31.
What do we prove through this experiment?
AP 7th Class Science Bits Chapter 9 Reflection of Light with Answers 1
A) Light rays
B) Light reflection
C) Pin hole camera
D) Lateral invertion
Answer:
B) Light reflection

Question 32.
What is the source of light in this experiment?
AP 7th Class Science Bits Chapter 9 Reflection of Light with Answers 2
A) Sun
B) Plain mirror
C) Mirror strip with the slit
D) Torch light
Answer:
A) Sun

Question 33.
What is the instrument in that girl’s hand?
AP 7th Class Science Bits Chapter 9 Reflection of Light with Answers 3
A) Kaleidoscope
B) Periscope
C) Convex mirror
D) Concave mirror
Answer:
B) Periscope

Question 34.
What is the angle in between the two mirrors?
AP 7th Class Science Bits Chapter 9 Reflection of Light with Answers 4
A) 30°
B) 45°
C) 60°
D) 90°
Answer:
D) 90°

Question 35.
The picture tells us
AP 7th Class Science Bits Chapter 9 Reflection of Light with Answers 5
A) Light reflection
B) Lateral invertion
C) Irregular reflection
D) Shadows
Answer:
B) Lateral invertion

Question 36.
How many plain mirrors do we need to prepare a periscope
A) 1
B) 2
C) 3
D) 4
Answer:
B) 2

Question 37.
What is the instrument in that boy’s hand?
AP 7th Class Science Bits Chapter 9 Reflection of Light with Answers 6
A) Pin hole camera
B) Periscope
C) Kaleidoscope
D) Convex mirror
Answer:
C) Kaleidoscope

Question 38.
What is the mirror used by this doctor?
AP 7th Class Science Bits Chapter 9 Reflection of Light with Answers 7
A) Convex mirror
B) Concave mirror
C) Plain mirror
D) None of these
Answer:
B) Concave mirror

Question 39.
If you want to farm multipe images how many mirrors atleastyou need?
A) 1
B) 2
C) 3
D) 4
Answer:
B) 2

Question 40.
When we reduce the angle between two mirrors the number of images
A) decrease
B) increase
C) does not change
D) none of these
Answer:
B) increase

Question 41.
The image that can be obtained on a screen is called
A) real image
B) virtual image
C) multiple images
D) none of these
Answer:
A) real image

Question 42.
Reflection from a rough surface is called
A) Real image
B) Virtual image
C) Regular reflection
D) Irregular reflection
Answer:
D) Irregular reflection

Question 43.
The ray of light returning from the mirror is called
A) Incident ray
B) Reflected ray
C) Refracted ray
D) All of these
Answer:
B) Reflected ray

Question 44.
In which mirror we get diminished image of the object?
A) Concave
B) Plane
C) Rough
D) Convex
Answer:
D) Convex

Question 45.
In this experiment the angle between the two plane mirrors is
AP 7th Class Science Bits Chapter 9 Reflection of Light with Answers 8
A) 0°
B) 90°
C) 180°
D) 360°
Answer:
A) 0°

Question 46.
Ravi observed the word FLOWER in the mirror. It appears like
AP 7th Class Science Bits Chapter 9 Reflection of Light with Answers 9
Answer:
C)

Question 47.
Kavitha arranged the mirrors with 600 angle and got 5 images. Then Bhavana adjusted the mirrors and got 11 images. What is the angle between the mirrors?
A) 30°
B) 45°
C) 60°
D) 90°
Answer:
A) 30

Question 48.
Rajesh arranged the rear view mirror to his motor cycle. The type of mirror is
A) Convex
B) Concave
C) Plane
D) Not above
Answer:
A) Convex