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According to lens makers' formula, 1/f = (n 21 - 1) 1/R1 - 1/R2. n 21 - 1 = 1/f ( R1 R2 / R1 + R2). n 21 - 1 = 1/20 (20 × 10 / 30). n 21 - 1 = 1/20 (20/3) = 1/3. n 21 = 1 + 1/3 = 4/3. n2/n1 = 4/3. n2 / 1.25 = 4/3. Therefore, the refractive index of the second medium n2 = 4 × 1.25 / 3 = 5/3 = 1.67. //

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What are the challange faced by democracy

Posted by Harsh Yadav 3 years ago

CBSE > Class 10 > Social Science

1 answers

Navya Mittal 3 years ago

1.) Decision making process is a time taking task as many levels and inatitutions are to be consulted for the final decision 2) There is often instability in the system, as leaders are changing every five years 3) In a democracy, corruption is prominent , since it's all about electoral competition, with wins and losses 4) Often, money related problems, dynastic Succession and lack of internal democracy in the system, results in vague decisions

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Jhansi Ki Rani ka Bachpan mein aur ham Logon ke bachpan mein kya Antar hai usko

Posted by Anjali Kumari 3 years ago

CBSE > Class 06 > हिंदी (OLD)

0 answers

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I want kannada sample paper

Posted by Nanda Kishore 3 years ago

CBSE > Class 10 > Regional Language

0 answers

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Determination and correct choice of park always lead to success. Do you agree? Elaborate with reference to success story of Santosh Yadav

Posted by Sujit Kumar Sethy 3 years ago

CBSE > Class 09 > English Lang & Lit. (184)

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What were the welfare measures taken by Ashoka?

Posted by Ahant Trimukhe 3 years ago

CBSE > Class 06 > Social (OLD)

1 answers

Kanchan Patel 2 years, 11 months ago

He built roads and planted shady trees on both sides of roads for travellers. He built several rest houses for the travellers. He got dug numerous wells to provide clean water to its citizens. He arranged for medical treatment for both human beings and animals.

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Why are traits acquired during lifetime of an individual not inherited

Posted by Rahul Negi 3 years ago

CBSE > Class 10 > Science

1 answers

Shivam Garg 3 years ago

This happens because an acquired trait involves change in non-reproductive tissues (somatic cells) which cannot be passed on to germ cells or the progeny. Therefore, these traits cannot be inherited.

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How has globalisation affected the if Indians? Explain with example

Posted by Pranju Wadaskar 3 years ago

CBSE > Class 10 > Social Science

1 answers

Harsh Yadav 3 years ago

Globalization is a integration between two countries through foreign trade and foreign investment by multinational coroporation MNC

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Why do tendrils coil around hard rough object

Posted by Aaryan Gandhi 3 years ago

CBSE > Class 10 > Science

1 answers

Shivam Garg 3 years ago

The tendrils coil around hard objects or support due to a stimulus of touch (thigmotropism) which causes less growth on the side in contact with support than the side which is away from it. This unequal growth of two sides of tendril makes it coil around the support.

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How to learn Modals easily ?

Posted by Abhinav Upadhyay 3 years ago

CBSE > Class 10 > English Language and Literature