Doubtly
@Doubtly · Joined Feb 2021
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- A double-slit arrangement produces interference fringes for sodium light (λ =589 nm) that are 0.20° apart. Given : θ₁ = 0.20°, n_w = 1.33 In the first approximation, D sin θ_(1 )= y₁ and D sin θ_(2 )= y₂ sin θ₂/sin θ₁ = y₂/y₁ …..(1) Now, y ∝ λD/d... 1
- The optical path of a ray of light of a given wavelength travelling a distance of 3 cm in flint Let d_fg and d_m be the distances by the ray of light in the flint glass and the medium respectively. Also, let n_fg and n_m be the refractiv... 1
- White light consists of wavelengths from 400 nm to 700 nm. What will be the wavelength range seen Let λ₁ and λ₂ be the wavelengths of light in water for 400 nm and 700 nm (wavelengths in vacuum) respectively. Let λ_v be the wavelength of... 1
- What is GNU? General Public License The GNU General Public License is called GPL in short. It has some terms and conditions to copy, modify and distribute the software licensed... 1
- Which licensing authority is responsible for WordPress? WordPress is licensed under GPLv2 (GNU General Public License) which makes it free and open-source software. Each copy of WordPress has a li... 1
- Explain the steps involved in the backup of the database. In the database, all your posts, media files, comments, and metadata stored. It also contains user's information and all your plugin setting... 1
- How to Backup WordPress root Files? There are many files in your WordPress directory. These files can be downloaded back from wordpress.org site. Some of them can be retrieved... 1
- Why is Backup important? Backup allows you to retrieve your site back if something goes wrong or if your site breaks. There could be many reasons for this like exter... 1
- How to take the backup of a WordPress site? A backup is just the copy of your original site through which you can restore your original site if anything goes wrong. Keeping a backup on... 2
- How to optimize WordPress site performance? Optimization increases the speed of your site and gives the best possible outcome. It improves the ranking of a website. There are many tric... 1
- How to reset password in WordPress? If you forget or lost the password of your account, WordPress gives you an option to reset it through different methods. There are four ways... 1
- How to improve security on a WordPress site. Security in a WordPress site is essential as these websites are favorite targets for hackers. A site can't be perfectly secured, but one can... 1
- How to update a WordPress site? You should always update your site to the latest version of WordPress. Whenever there is a new WordPress version, you receive an update mess... 1
- Explain the difference between WordPress Themes and Plugins. A theme is an external effect of a website's presentation and designing. Whereas, a plugin is an interior effect which adds or remove some f... 1
- What are the plugins you can use to create a contact form in WordPress? You can use a plug-in like Gravity forms or a free plugin contact form 7 to create a contact form in WordPress. 1
- When will you not be able to see the plugin menu on a WordPress site? When a site is hosted on free wrodpress.com, plugin menu will not appear. Also if you don't have an account for the administrator level, you... 1
- What are WordPress Plugins? WordPress plugins are programs written in PHP scripting language that extends the functionality or add some new features to a WordPress site... 1
- What is the difference between free and paid WordPress theme? Free and premium WordPress themes are different in many ways. With free themes, you have to compromise with the quality as many other sites... 1