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An object is placed 20 cm in front of a plane mirror. The mirror is moved 2 cm towards the object. The distance between the positions of the original and final images seen in the mirror is:
Anonymous Quiz
20%
2
34%
4
28%
10
17%
22
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Which position of the object will produce a magnified virtual image, if a concave mirror of focal length 15 cm is being used?
Anonymous Quiz
20%
10
35%
20
37%
30
8%
35
โค4๐คฉ3๐2๐1
A ray of light that strikes a plane mirror PQ at an angle of incidence of 30o, is reflected from the plane mirror and then strikes a second plane mirror QR placed at right angles to the first mirror. The angle of reflection at the second mirror is:
Anonymous Quiz
23%
30
37%
45
30%
60
9%
90
๐ฅ5
a lens of focal length 12 cm forms an erect image, three times the size of the object. The distance between the object and image is:
Anonymous Quiz
22%
8
31%
16
29%
32
18%
24
๐5๐ฅ3๐ฅฐ3
an object is placed 21 cm from a converging lens, the image formed is slightly smaller than the object. If the object is placed at a distance of 19 cm from the lens, the image formed is slightly larger than the object. The approximate focal lengths
Anonymous Quiz
25%
5
37%
10
24%
15
14%
20
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เคฌเคฆเคฒเคจเคพ เคเคฐเฅเคฐเฅ เคนเฅ | Need to change | Phase 1 | Day 1
https://youtu.be/OxmIVpLrqGI
https://youtu.be/OxmIVpLrqGI
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เคฌเคฆเคฒเคจเคพ เคเคฐเฅเคฐเฅ เคนเฅ | Need to change | Phase 1 | Day 1
เคฌเคฆเคฒเคจเคพ เคเคฐเฅเคฐเฅ เคนเฅ | Need to change | Phase 1 | Day 1
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๐8๐4
The electronic configuration of an element is found to be 2, 4. How many bonds can one carbon atom form in a compound?
Anonymous Quiz
12%
1
35%
2
35%
4
19%
6
๐ฅฐ8๐4๐ค1
A carbon compound contains two atoms of carbon. Which name should the carbon compound bear
Anonymous Quiz
18%
Butane
56%
Ethane
19%
Ethene
7%
Ethyne
๐ฅ6๐ฅฐ4๐2๐1๐1
an object is placed symmetrically between two plane mirrors, inclined at angle of 72 degree, then total no. of images formed:
Anonymous Quiz
18%
5
47%
4
25%
3
10%
2
๐ฅฐ3๐คฉ3๐1
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Code - SJSUPER10
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SSC Class 10 - Life Process I - Components Of Food + Quiz Concepts Explained on Unacademy
Understand the concept of Life Process I - Components Of Food + Quiz with SSC Class 10 course curated by
Shubham Jha on Unacademy. The Science & Technology - Part II course is delivered in Hinglish.
Shubham Jha on Unacademy. The Science & Technology - Part II course is delivered in Hinglish.
๐5๐ฅ2โค1๐1
An image of an object produced on a screen which is about 36 cm using a convex lens. The image produced is about 3 times the size of the object. What is the size of the object?
Anonymous Quiz
39%
12
35%
13
20%
14
6%
15
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The blood living in tissue becomes richer in
Anonymous Quiz
14%
Co2
14%
Water
58%
Hameoglobin
14%
Oxygen
๐6๐4๐ฅฐ3
Blood is pumped from heart to entire body by the
Anonymous Quiz
28%
Lungs
36%
Ventricle
28%
Atria
8%
Nervous
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