Question
An optically plane surface reflects a beam of light –
Solution
An optically plane surface reflects a beam of light as a parallel beam in one direction. The set of incident rays are reflected as a set of rays. In other words, a beam of light is reflected as a beam of light if the mirror is plane and its reflecting surface is smooth. This type of reflection of a set of rays is called Specular Reflection.
Match the idioms in List-I with their meanings in List-II:
Something that can not be corrected.
Person who is friendly, lively and enjoyable
- Choose the word that is opposite in meaning to the given word.
Generous Select the most appropriate meaning of the word  which is opposite to the one marked in bold letters according the context in which it has been used. ...
Select the most appropriate ANTONYM of the given word.
Rebellion
Flower : Bud :: Plant : ?
The dessert was delicious .
- Choose the alternative which can replace the bold word without changing the meaning of the sentence.
Her benevolent nature made her popular among t... The search for security, peace and happiness is  built-in in all beings, but sadly it remains a futile one for many.
