Concave mirrors have a reflective surface that curves inward, resembling a portion of the inner surface of a sphere. This design allows them to converge light rays to a single focal point. Due to this property, concave mirrors are extensively used in applications requiring light concentration, such as solar furnaces, where they focus sunlight to produce intense heat. These mirrors are also prevalent in everyday devices like torches, vehicle headlights, and shaving mirrors.
Select the most appropriate ANTONYM of the bold word.
Cautious
Procrastinate
Select the most appropriate SYNONYM of the highlighted word.
The scene of mass killings in the village presented a macabre sight to the visitor...
Select the most appropriate option to fill in the bold part.
As I am hearing the the lecture it reminded me of a book I had read two y...
13. A) Subdue B) Loose C) Stimulate D) Careless
He is known for being generous ; he donates a lot to charity.
A. There had already been abundant rainfall in Delhi.
B. It was the fag end of summer.
C. A strong wind began to blow and the rain came ca...
One who dies for a noble cause
Select the most appropriate meaning of the following idiom-
ROLL OUT
The room was dim and hard to see in.
