CBSE Board | Homework Help

u = - 18 cm
v = 4 cm
1 / f = 1 / v + 1 / u
1 / f = 1 / 4 + 1 / (- 18)
1 / f = 1 / 4 - 1 / 1 8
1 / f = 9 - 2 / 36 = 7 / 36
f = 36 / 7 cm
focal length is positive so mirror is convex.
R = 2 × 36 / 7
= 72 / 7 cm

0 Thank You

ANSWER

Bbb

Posted by Ayan Bapu 5 years ago (10394451)

CBSE > Class 02 > EVS

2 answers

Surabhi Y 5 years ago (4542760)

Means what

0 Thank You

Namisha Gupta 5 years ago (4017798)

Earth

1 Thank You

ANSWER

When an object is placed at a distance of 60cm from a convex mirror the magnification produced is 1/2. Where should object be placed to get a magnification of 1/3?

Posted by Aditi Ringusia 4 years, 7 months ago (10234718)

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 7 months ago (6945213)

0 Thank You

ANSWER

tom says that he is a good brother magie do you agree Give reason

Posted by Adarsh Ambu 5 years ago (10394436)

CBSE > Class 06 > English (OLD)

1 answers

Sia ? 4 years, 7 months ago (6945213)

Please ask question with complete information.

0 Thank You

ANSWER

Hey buddies,,, I m sumaila, let's come to the point ,,, aap sabko pta h ki mei kuch bhi post krti ho to sirf vo study se related hi hota h or sirf mene ek apni school se related problems apne frnds ke share kya kr lo aap logo ko jaise mene padhne se mana kr diya ,,, agr aap logo ko .eri problems or questions ke answer ni dene to mt do ni dekhne to mt dekho kisi ne aapko force ni kiya h aake is mei bss sumaila ke questions drkho aapko mere questions faltu lgte h to mt dekha karo aap mere questions dekhte ho iska mtlb aap bhi faltu ho (don't take it hurt) aapko or kuch kaam ni h kya mere questions dekhne ke alava aapko pure cbse guide mei sirf mere hi question dikhai dete h kya soo plzzz agr tumhe problem h ti mt dekho kisi ne force ni kiya h tumhe ...... Have a nice day dear(to alll my haters) and god save from covid-19 ....... Take care of ur self.....

Posted by Sumaila Ali Choudhary??? 5 years ago (8597425)

CBSE > Class 10 > Mathematics

5 answers

Sumesh ☺️☺️☺️ 5 years ago (8504833)

Is your problem solved or not?

1 Thank You

Sumesh ☺️☺️☺️ 5 years ago (8504833)

Friends

1 Thank You

Sumesh ☺️☺️☺️ 5 years ago (8504833)

Mention not☺️☺️be frie5, my self ANSHIKA

1 Thank You

Sumaila Ali Choudhary??? 5 years ago (8597425)

Thnku ☺️☺️

2 Thank You

Sumesh ☺️☺️☺️ 5 years ago (8504833)

Nahi esa kuch nahi hai, har kise ki life mai problem hoti hai or use share karna galt nahi , may God help you☺️by the way mujhe tumhare inn post se koi problem nahi hoti

1 Thank You

ANSWER

The image formed by a convex mirror of focal length 30cm is a quarter of object.what is the distance of the object from the mirror.

Posted by Aditi Ringusia 4 years, 7 months ago (10234718)

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 7 months ago (6945213)

0 Thank You

ANSWER

Find the product of(r+4)and(3a-b)

Posted by Yaalini J 5 years ago (10369114)

CBSE > Class 08 > Mathematics

1 answers

Yaalini J 5 years ago (10369114)

1 Thank You

ANSWER

An object is placed 15cm from a convex mirror of radius of curvature 90cm. calculate position of image and its magnification.

Posted by Aditi Ringusia 4 years, 7 months ago (10234718)

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 7 months ago (6945213)

radius of curvature = 90 cm
focal length = r/2 = +45 cm(since it is on the direction on the incident light)
object distance, u = - 15 cm (since it is on the opposite direction of the incident light)
we have to find v= ?
using mirror formula we get ,
1/v + 1/u = 1/f
so 1/ v = 1/f - 1/u
1/v = 1/ 45 - (1/-15) = 1/45 + 1/15 = 4/45
so v =45 / 4 cm
therefore image distance = 45 / 4 cm (positive sice it is in the direction of incident light)

0 Thank You

ANSWER

Check whether 307 is a term of the list numbers 6,13,20,27

Posted by Sumit Pandey 5 years ago (9944238)

CBSE > Class 10 > Mathematics

1 answers

Aditi Ringusia 5 years ago (10234718)

a=6 d=13-6=7 n=? an=307 an=a+(n-1)d 307=6+(n-1)7 307=6+7n-7 307=7n-1 307+1=7n 308=7n n=308/7 n=44 therefore, 307 term will come on 44th in number in A.P.

0 Thank You

ANSWER

An object is placed at a large distance in front of a convex mirror of radius if curvature 40cm. How far is the image behind the mirror.

Posted by Aditi Ringusia 4 years, 7 months ago (10234718)

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 7 months ago (6945213)

Large distance =infinity

The image will form on principle focus of convex mirror because rays coming from infinity when touch mirror get diverged but virtually they meet at principle focus

Radius of curvature=40cm

Focal length=Radius of curvature/2

f=40/2

f=20cm

0 Thank You

ANSWER

What is formal letters?

Posted by Aniruddha Debnath. 5 years ago (9324289)

CBSE > Class 04 > English

1 answers

Niyati Shodi 5 years ago (10398467)

Letter to you uncle thanking him for birthday gift

0 Thank You

ANSWER

what is a flood

Posted by Chanukya Ram Kaveti 5 years ago (10388719)

CBSE > Class 06 > Science (OLD)

4 answers

Disha S 5 years ago (4392449)

A flood is a natural calamity caused when it rains heavily and the ground cannot absorb water, so the water cannot go anywhere ,so the water collects on the roads and it destroys homes and other properties

0 Thank You

Aadya Bhardwaj 5 years ago (10386536)

to fill a place with water; to be filled or covered with water किसी स्‍थान पर पानी भर देना; किसी में पानी भर जाना; बाढ़ आना I left the taps on and it flooded the bathroom. I left the taps on and it flooded the

0 Thank You

Ch Ritu 5 years ago (9755460)

Flood is a natural calamities which occur due to ocean tides

1 Thank You

Dabhi Dhavnisha 5 years ago (10026373)

Flood means the water come in the city or village is called flood

0 Thank You

ANSWER

How can you tell about worker that he or she will be working in a informal sector

Posted by Shyna Kataria 5 years ago (10368647)

CBSE > Class 12 > Economics

0 answers

ANSWER

Going to buy a book

Posted by Sapna Rani Pujari 5 years ago (10394133)

CBSE > Class 04 > English

2 answers

Lakshmishree Lekana 4 years, 11 months ago (10466715)

A.Poem

0 Thank You

Lalithamba Majji 5 years ago (9884831)

A. Poem

0 Thank You

ANSWER

The saga continues

Posted by Anamika Bharti 5 years ago (10377969)

CBSE > Class 11 > English Elective NCERT

0 answers

ANSWER

Democracy is a rule of the majority. The poor are in majority. So democracy must be rule of the poor. How can not be the case?

Posted by Neetu Kumari 5 years ago (8817306)

CBSE > Class 10 > Social Science

1 answers

Subham Gite 5 years ago (10089872)

Democracy have a right of any person to speak in democracy have a six right the poor can use this right and poor peoples have right to information to

1 Thank You

ANSWER

Chapter 11 question

Posted by Pawan Pandit 5 years ago (10393996)

CBSE > Class 06 > हिंदी (OLD)

0 answers

ANSWER

Ch,11question ans

Posted by Pawan Pandit 5 years ago (10393996)

CBSE > Class 06 > हिंदी (OLD)

2 answers

Raj Rathaur 5 years ago (10369809)

Amavasya saptahant karo ok

1 Thank You

Palak Singh 5 years ago (10387941)

Amavasya saptahant karo

1 Thank You

ANSWER

Write steps to add shadow to shape your document

Posted by Palak Ramteke 5 years ago (10287076)

CBSE > Class 09 > Information Technology (402)

0 answers

ANSWER

vinod a partner gets commission this will be recorded in

Posted by Khushi Choraria 5 years ago (10394050)

CBSE > Class 12 > Accountancy

2 answers

Shivani Narwar 5 years ago (10049163)

And also it comes in Profit and Loss Appropriation account

0 Thank You

Kajal Sah 5 years ago (10398808)

Partners capital account

0 Thank You

ANSWER

Thank u so much.....??☺️ @sumesh pandit your answer help very much!! Keep smiling..? and I pray to God that you get 90+ in exam!! All the best..?

Posted by Teresa Singh ✌🏻 5 years ago (9341392)

CBSE > Class 10 > Mathematics

4 answers

Sumesh ☺️☺️☺️ 5 years ago (8504833)

GOOD EVENING KHUSHI? ,How you know I am sweet??,and thanks again,

2 Thank You

Teresa Singh ✌🏻 5 years ago (9341392)

Ooo!! Anshika hello!!❤️ Your are so sweet.☺️☺️ Thank u so much for your pray!!?? Myself Khushi!!?

2 Thank You

Sumesh ☺️☺️☺️ 5 years ago (8504833)

I also pray that you also get 98+ marks in your exam☺️☺️

2 Thank You

Sumesh ☺️☺️☺️ 5 years ago (8504833)

I am Anshika not sumesh , he is my brother I'd ??,thanks for your prayers ☺️☺️☺️☺️ What's your name

2 Thank You

ANSWER

இயல் 1 நெடுவினா

Posted by Nisha Murali 5 years ago (10286416)

CBSE > Class 09 > Regional Language

3 answers

Ankan Halder 5 years ago (10385473)

???,

0 Thank You

Adhish Annamalai 5 years ago (10096820)

எந்த நெடுவினா?

0 Thank You

Ruhani Gupta 5 years ago (10412137)

What is this written?

3 Thank You

ANSWER

I'm sorry there isn 't many food left but l can make some sandwiches if you like

Posted by Gayatri Valvi 5 years ago (10393977)

CBSE > Class 08 > French

5 answers

Diksha Laniya 5 years ago (10402180)

mon petit frère veut être acteur.

1 Thank You

Zibiah Gonsalves 5 years ago (3780094)

Je suis désolé qu'il ne reste plus beaucoup de nourriture mais je peux faire des sandwichs si tu veux

3 Thank You

Aadi Sharma 5 years ago (10395758)

Je suis désolé qu'il ne reste plus beaucoup de nourriture mais je peux faire des sandwichs si tu veux

0 Thank You

Gayatri Valvi 5 years ago (10393977)

My little brother wants to be an actor

1 Thank You

Gayatri Valvi 5 years ago (10393977)

Please ans this e question

0 Thank You

ANSWER

What does liberalism stand for since the French revolution

Posted by Malini B 4 years, 8 months ago (9676212)

CBSE > Class 10 > Social Science

1 answers

Sia ? 4 years, 8 months ago (6945213)

Liberalism is a political and economic doctrine that emphasizes individual autonomy, equality of opportunity, and the protection of individual rights (primarily to life, liberty, and property), originally against the state and later against both the state and private economic actors, including businesses.

0 Thank You

ANSWER