For a triangle ΔABC, ∠A+∠B+∠C will be equal to :
Answers
Answer:
180°
Step-by-step explanation:
This is because of angle sum property which tells us that sum of all angles of triangles is always 180°
Hope it helps
Answer:
BHASHYAM EDUCATIONAL INSTITUTIONS
R.T-4-PHYSICS
Lesson: REFLECTION OF LIGHT ON CURVED SURFACES,
STRUCTURE OF ATOM
CLASS: X MARKS: 20M
I. Answer the following questions 5× 2=10M
1. Explain Hund’s rule with an example.
2. Draw the shapes of all d-orbitals.
3. Write the limitations of Bohr’s atomic model.
4. Draw the ray diagram for the situation of converging mirror.
a) Where the image is formed at the place same as the object is placed.
b) To get a virtual image
5. Write two uses of each convex and concave mirrors.
II. Answer the following question 5×1 = 5M
6. Explain why 4s<3d?
7. Write the colours formed when cupric chloride and Strontium chloride react with
hydrochloric acid and is introduced in non-luminous flame.
8. Define the term focus.
9. Write the mirror formula and explain the terms in it.
10. Write any two parameters for sign convention.
III. Fill in the blanks. 10×1/2 =5M
11. The distance between pole and focus is called_____
12. For a diverging mirror, the reflecting surface is______
13. When the object is placed at a distance of 30cm in front of a concave mirror
whose focal length is 10cm. Then, the image is formed at a distance of_____
14. When a concave mirror is placed in water it’s focal length is____
15. In car head lights, the position of the bulb is______BHASHYAMEDUCATIONALINSTITUTIONS
REVISIONTEST–3 ENGLISH
CLASS–X MAXMARKS-20
SECTION-A
Readingcomprehension
Readthefollowingpassagecarefully
Despitetheriskofbeingbullied,hisparentsinsistedNickonattendingmainstream
school.Itwasthebestdecisiontheycouldhavemadeforme.AddsNickWholater
achievedadegreeinfinancialplanningandrealestate.Itwasveryhardbutitgaveme
independence.
Nick,whowasteasedandbullied,hadanelectricwheelchairformobilityanda
teamofcareerstohelphim.
IwasdeeplydepressedwhenIwaseightyearold,hesaid.Iwenttomymum crying
andtoldherIwantedtokillmyself.
Ifeltcoldandbitter.IhatedGodfordoingthistomeandwasterrifiedofwhatwould
happenwhenmyparentsweren'ttheretolookaftrme.Icouldbrushmyownteethwitha
wallmountedbrushandwashmyownhairwithpumpactionsoapbuttherewassomuch
thatwasimpossibleforme
Nowanswerthefollowingquestions.EachQuestionhasfourchoices.Choosethe
correctanswerandwrite(A)(B)(C),(D)inyouranswerbooklet.
1.Whattypeoftextintheabovepassage? ( )
a)Narration B)Essay C)Biography D)Story
2.“Ifeltcoldandbitter.IhatedGod.whatdoestheunderlinedphrasemean?
a)Shivering B)Upset C)Joyful D)Surprised
3.Accordingtothegivenpassage,attheageofeight,Nickwasverydepressed
because…………………( )
a)Hisfatherputhiminaregularschool
b)Hewasatorso
c)Hisparentshelpedhim
d)Hewasteasedandbulliedbyhisschoolmates.
4.Itwasveryhardbut__________Independence.‘It’refersto___________( )
a)Theparentsdecisionabouthisschooling
b)Theelectricwheelchair
c)ThedegreeinFinancialplanningandrealestate