1. Complete the gaps.
1.A ___________ is a picture that cannot be seen on a screen.
2.A convex object always produces a virtual, smaller-sized image.
3.A _________ mirror always produces an image that is the same size as the thing it is reflecting.
4.A screen-capable image is referred to as a ________ image.
5.A concave object cannot produce an image that can be seen on a screen.
1. Complete the gaps.
1.A ___________ is a picture that cannot be seen on a screen.
2.A convex object always produces a virtual, smaller-sized image.
3.A _________ mirror always produces an image that is the same size as the thing it is reflecting.
4.A screen-capable image is referred to as a ________ image.
5.A concave object cannot produce an image that can be seen on a screen.
Answer:
1.A virtual image is an image that cannot be obtained on a screen.
2.A convex mirror always creates a smaller, virtual image.
3.A plane mirror always creates an image that is the same size as the object.
4.A true image is one that can be obtained on a screen.
5.A concave lens cannot produce an image that can be displayed on a screen.
2. Explain the main focus of a concave mirror.
2. Explain the main focus of a concave mirror.
Answer:
Light beams parallel to a concave mirror’s primary axis converge at a specific location along that axis after reflecting from the concave mirror. This point is the main focal point of the concave mirror.
3. If a statement is true, mark "T," and if it is false, mark "F."
(A) With a convex mirror, we can create an expanded and upright image. (T/F)
(b) A concave lens creates a virtual image every time. (T/F)
(c) By using a concave mirror, we can create a true, magnified, and inverted picture. (T/F)
(d) A screen cannot produce an actual image. (T/F)
(e) A concave mirror creates a real image every time. (T/F)
3. If a statement is true, mark "T," and if it is false, mark "F."
(A) With a convex mirror, we can create an expanded and upright image. (T/F)
(b) A concave lens creates a virtual image every time. (T/F)
(c) By using a concave mirror, we can create a true, magnified, and inverted picture. (T/F)
(d) A screen cannot produce an actual image. (T/F)
(e) A concave mirror creates a real image every time. (T/F)
Answer:
1. False
b) True
c) True
d) False
e) False
4. Outline the characteristics of the image a plane mirror produces.
4. Outline the characteristics of the image a plane mirror produces.
Answer:
The image produced by a plane mirror possesses the following features:
Object and image separation are same.
The object's size matches that of the image.
The resulting image is fictitious and upright.
lateral image inversion.
5.Identify the letters in the English alphabet or any other language you are familiar with where the image created by a plane mirror appears to be an exact replica of the letter. Talk about your results.
5.Identify the letters in the English alphabet or any other language you are familiar with where the image created by a plane mirror appears to be an exact replica of the letter. Talk about your results.
Answer:
Because they are laterally symmetric, the alphabets A, H, I, M, O, T, U, V, W, X, and Y generate images in a plane mirror that are exactly like the letter itself.
6. What exactly is a virtual image? Describe a situation in which a picture comes to mind.
6. What exactly is a virtual image? Describe a situation in which a picture comes to mind.
Answer:
An image that cannot be obtained on a screen is referred to as a virtual image. A virtual image is produced by a planar mirror.
7. List two distinctions between convex and concave lenses.
7. List two distinctions between convex and concave lenses.
Answer:
lens convex
Cavular Lens
centre that is thick and edge that is thin.
thick at the margin and thin in the centre.
Whether a genuine or virtual image is created.
The resulting image is digital.
8. Use a concave and a convex mirror once each.
8. Use a concave and a convex mirror once each.
Answer:
Car and scooter headlights both use concave mirrors.
In cars, convex mirrors are utilised as side-view mirrors.
9. What kind of mirror can create a true image?
9. What kind of mirror can create a true image?
Answer:
A true image can be created using the concave mirror.
10. What kind of lens creates a virtual image every time?
10. What kind of lens creates a virtual image every time?
Answer:
A virtual image is formed using a concave lens.
Choose the right response for questions 11–13.
11. A computer can create a virtual image that is larger than the object.
(I)Concave mirror
(ii)concave lens
(iii)Convex mirror
(iv)plane mirror
11. A computer can create a virtual image that is larger than the object.
(I)Concave mirror
(ii)concave lens
(iii)Convex mirror
(iv)plane mirror
Answer:
Concave mirror, option (i), is the proper response.
12. David is looking at his reflection in a plane mirror. The mirror is 4 metres away from the image of him. David will be 1 m away from his reflection if he travels in that direction.
(i)3 m
(ii) 5 m
(iii)6 m
(iv)8 m
12. David is looking at his reflection in a plane mirror. The mirror is 4 metres away from the image of him. David will be 1 m away from his reflection if he travels in that direction.
(i)3 m
(ii) 5 m
(iii)6 m
(iv)8 m
Answer:
Option (iii) 6 m is the correct choice.
13. A vehicle's rearview mirror is a plane mirror. A automobile is being reversed at a speed of 2 m/s. The picture of a truck parked behind the driver's automobile can be seen in the rearview mirror. The speed at which the truck's picture moves towards the driver will be
(I)1 m/s
(ii) 2 m/s
(iii)(4 m/s)
(iv) 8
13. A vehicle's rearview mirror is a plane mirror. A automobile is being reversed at a speed of 2 m/s. The picture of a truck parked behind the driver's automobile can be seen in the rearview mirror. The speed at which the truck's picture moves towards the driver will be
(I)1 m/s
(ii) 2 m/s
(iii)(4 m/s)
(iv) 8
Answer:
The correct answer is option (iii) 4 m/s.
