Total Questions: 3
Q A light is refracted through a prism. The angle of deviation is :
When light passes through a prism, it bends (refracts) twice:
Due to this bending, the emergent ray is not in line with the incident ray.
The angle of deviation (δ) is defined as:
The angle between the direction of the incident ray and the emergent ray
So the correct answer is option 1.
Q If the amplitude of loudness of sound becomes twice, then loudness increases by a factor of :
🔍Explanation
Loudness is how “loud” or “soft” a sound feels to our ears.
The Relationship: Loudness ∝ (Amplitude)²
This means:
Loudness is proportional to the square of the amplitude.
So if you double the amplitude, you don’t just double the loudness —
👉 you multiply it by 2² = 4.
Q Bioluminescence occurs in :
🔍Explanation:
Bioluminescence is most prominently seen in Ctenophora (comb jellies) and some members of Coelenterata (like jellyfish).
Bioluminescence:- the production and emission of light by living organisms, is commonly observed in the marine environment, especially in deep-sea ecosystems.