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Why does the Sun appear reddish early in the morning?
Science
Science

Class 10

NCERT

Publisher:
NCERT
Subject:
Science
1

Chapter 1: Chemical Reactions and Equations

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2

Chapter 2: Acid,Bases and Salts

39 questions

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3

Chapter 3: Metals and Non-metals

38 questions

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4

Chapter 4: Carbon and its Compound

24 questions

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5

Chapter 5: Periodic Classification of Elements

30 questions

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6

Chapter 6: Life Processes

13 questions

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7

Chapter 7: Control and Coordination

12 questions

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8

Chapter 8: How do Organism Reproduce?

11 questions

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9

Chapter 9: Heredity and Evolution

12 questions

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10

Chapter 10: Light -Reflection and Refraction

34 questions

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11

Chapter 11: The Human Eye and Colourful World

18 questions

Q1
Explain why the planets do not twinkle.
Q2
Why does the Sun appear reddish early in the morning?
Q3
Why does the sky appears dark instead of blue to astronauts ?
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12

Chapter 12: Electricity

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13

Chapter 13: Magnetic Effects of Electric Current

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14

Chapter 14: Sources of Energy

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15

Chapter 15: Our Environment

9 questions

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16

Chapter 16: Sustainable Management of Natural Resources

7 questions

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Why does the Sun appear reddish early in the morning?

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Updated on: Mar 13, 2023

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Why does the Sun appear reddish early in the morning?
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During sunrise, the light rays from the sun travel a greater distance in the earth's atmosphere. Hence, these light rays are scattered more than they are scattered during noon. Also, red light is scattered the least and hence travel the longest distance. All the other light rays in the visible spectrum is scattered away. Hence, sun appears reddish in the morning.
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Practice more questions from Science (NCERT)

Q1
Explain why the planets do not twinkle.
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Why does the Sun appear reddish early in the morning?
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Practice questions from Science (NCERT)

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The Human Eye and Colourful World

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Science (NCERT)

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The Human Eye and Colourful World

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Book:

Science (NCERT)

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The least distance of distinct vision for a young adult with normal vision is about
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The Human Eye and Colourful World

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Science (NCERT)

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The Human Eye and Colourful World

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The Human Eye and Colourful World

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Question 7:
The clear sky appears blue because
  1. blue light gets absorbed in the atmosphere
  2. ultraviolet radiations are absorbed in the atmosphere
  3. violet and blue lights get scattered more than lights of all other colours by the atmosphere
  4. light of all other colours is scattered more than the violet and blue colour lights by the atmosphere
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The Human Eye and Colourful World

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Question 3
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Topic

Topic:

The Human Eye and Colourful World

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Exam:

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Question 4
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Trace the sequence of events which occur when a bright light is focused on your eyes.
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Topic:

The Human Eye and Colourful World

Exam

Exam:

Class 10th Board 2019

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Practice questions on similar concepts asked by Filo students

Question 1
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d girls. We begi such as armpit become dark ms, as well as on begin to develo our own bodie place that are gins to increase he breasts. Als gin to have ne crack. Further erect, either but link to th exual mode d Is have to -cells from t it can happe mal transfer animals are participate in this process of mating, their state of sexual maturity must be identifiable by other individuals. Many changes during puberty, such as new hair-growth patterns, are signals that sexual maturation is taking of months and e person, nor de ppen early and ach change dog hick hair on the Only slowly dos e changes show shaped noses wth, or size and ets of the sex s age? We ha -cellular bodies Is to participa nd we have se e them. Huma vever, while the e, the resours 7. While that s not likely to b begins to so period during Selen place. On the other hand, the actual transfer of germ-cells between two people needs special organs for the sexual act, such as the penis when it is capable of becoming erect. In mammals such as humans, the baby is carried in the mother's body for a long period, and will be breast-fed later. The female reproductive organs and breasts will need to mature to accommodate these possibilities. Let us look at the systems involved in the process of sexual reproduction. 8.3.3 (a) Male Reproductive System The male reproductive system (Fig. 8.10) consists of portions which produce the germ-cells and other portions that deliver Ureter the germ-cells to the site of fertilisation. The formation of germ-cells or sperms takes place in the testes. These are located outside the abdominal cavity in scrotum because sperm formation requires a lower temperature than the normal body temperature. We have discussed the role of the testes in the secretion of the hormone, testosterone, in the previous chapter. In addition to regulating the formation of sperms, testosterone brings about changes in appearance seen in boys at the time of puberty. The sperms formed are delivered through the vas deferens which unites with a tube coming from the urinary bladder. The urethra thus forms a common passage for both the sperms and urine. Along the path of the vas deferens, glands like the prostate and the seminal vesicles add their secretions so that the sperms are now in a fluid which makes their transport easier and this fluid also provides nutrition. The sperms are tiny bodies that consist of mainly genetic material and a long tail that helps them to move towards the female germ-cell. 8.3.3 (b) Female Reproductive System The female germ-cells or eggs are made in the ovaries. They are also responsible for the production of some hormones. Look at Fig. 8.11 and identify the various organs in the female reproductive system. How do Organisms Reproduc Seminal vesicle Oviduct or Fallopian tube Ovary Vas deferens Scrotum Uterus Testis Cervix Figure 8.10 Human-male reproductive system Vagina -Bladder -Prostate gland Penis Urethra Figure 8.11 Human-female reproductive system 137
Topic

Topic:

Biology

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Question 2
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4 The value of constant p, so that the vectors and are mutually perpendicular, is
  2. 3
Topic

Topic:

Physics

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Question 3
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हल :- आगविक द्रव्यान द्रव्यमान 44 हो तो उसका वाध्म घनत्व बताओ आणविक द्रव्यमान V.D. V.D. Ans गैस का वाष्प घनत्व . अतः गैस का आणविक द्रव्यमान V.D. Ans. 15. यदि लीटर हाइड्रोजन गैस में S.T.P. पर अणुओं की संख्या हो तो लीटर गैस में S.T.P. पर अणुओं की संख्या कितनी है ? हल :- S.T.P. पर लीटर में अणुओं की संख्या 16. दो एक ही समान जार हैं। एक में और दूसरे में गैस एक ही तापमान और दबाव पर भरी हैं। बताओं किस जार में आक्सीजन परमाणु अधिक है और क्यों ? Ans. दो एक ही समान जार हैं । अतः उनमें भरी दोनों गैसों और का आयतन समान है । दोनों का तापमान और दबाव, भी समान है I अतः Avogadra's law से दोनों जार में दोनों, गैसों के अणुओं की संख्या समान होगी। अर्थात् जितना अणु का होगा, उतना ही अणु का होगा । लेकिन के एक अणु में आक्सीजन का दो परमाणु है तथा के एक अणु में, आक्सीजन का एक परमाणु है । अतः वाले जार में आक्सीजन परमाणुओं की संख्या वाले जार में आक्सीजन, परमाणुओं की संख्या अधिक होगी । अंभ्याक्रार्थ प्रश्न (E) Numericals :- (a) जब 88 ग्राम तनु से प्रतिक्रिया करता है कितनी ग्राम उत्पन्न होती है। Ans. (b) 32.7 ग्राम जिंक को पूर्ण रूप से घोलने के लिये कितनी सल्फ्यूरिक अम्ल की आवश्यकता होगी और कितना जिंँ सल्फेट बनेगा ? Ans. 80.7 (c) 1.7 ग्राम अमोनिया गैस उत्पन्न करने के लिये कितना ग्राम अमोनियम क्लोराइड के साथ गर्म करने आवश्यकता होती है ? Ans. (d) 32 ग्राम उत्पत्र करने के लिये आवश्यक कापर का परिमाण ज्ञात करो जबकि कापर की प्रतिक्रिया सल्फ्यूरिक अम्ल के साथ होती है। Ans. 31.75 (e) एक बड़े लोहे के टैंक में रखे चूना के जल में कितना गैस प्रवाहित किया जाय कि 100 ग्राम प्राप्त Ans. . (f) जब 5.35 ग्राम अमोनियम क्लोराइड की प्रतिक्रिया कैल्शियम हाइड्राक्साइड के साथ होती है तो कितनी अमोनिया गैस उत्पत्र होती है । Ans. 1.70 (g) 12 ग्राम कार्बन को आक्सीजन की अधिकता में जलाने पर कितना ग्राम प्राप्त होगी ? Ans. . (h) कितना ग्राम सल्फर को S.T.P. पर जलाने से 10 litre प्राप्त होगी ? Ans. 14.28 (i) 10 ग्राम कापर को सान्द्र के साथ गर्म करने पर कितना litre S.T.P. पर प्राप्त होगी ?Ans. 67 . गनिक गणना
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Topic:

Physics

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\hline S.No. & Object distance u (cm) & Image distance V \\ \hline 1. & & \\ \hline 2. & & \\ \hline 3. & & \\ \hline 4. & & \\ \hline 5. & & \\ \hline 6. & & \\ \hline \end{tabular} (a) Write the serial number of that observation which is not correct. How did you arrive at this conclusion? (b) Draw a ray diagram for the observation at S. No. 2. (c) What is lens formula?
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Physics

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Question Text
Why does the Sun appear reddish early in the morning?
Updated OnMar 13, 2023
TopicThe Human Eye and Colourful World
SubjectScience
ClassClass 10
Answer TypeText solution:1 Video solution: 5
Upvotes514
Avg. Video Duration7 min