- Trending Categories
- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- MS Excel
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP
- Physics
- Chemistry
- Biology
- Mathematics
- English
- Economics
- Psychology
- Social Studies
- Fashion Studies
- Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Which of the following is/are not always necessary to observe a shadow?
$(a)$. Sun
$(b)$. Screen
$(c)$. Source of light
$(d)$. Opaque object
To observe a shadow, any source of light, an opaque object, and a screen are necessary. The sun is not necessary to observe the shadow of an object.
So, option $(a)$ is correct.
Advertisements