A spherical air bubble is embedded in a piece of glass. For a ray of light passing through the bubble, it behaves like a :

examrobotsa's picture

Submitted by examrobotsa on

Q: 17 (NDA-I/2011)
A spherical air bubble is embedded in a piece of glass. For a ray of light passing through the bubble, it behaves like a :

question_subject: 

Science

question_exam: 

NDA-I

stats: 

0,10,21,14,10,6,1

keywords: 

{'spherical air bubble': [0, 0, 0, 1], 'bubble': [0, 0, 0, 1], 'lens': [0, 0, 0, 1], 'glass': [0, 0, 1, 4], 'ray': [2, 0, 5, 15], 'light': [16, 4, 34, 62]}

The correct answer is option 2: diverging lens.

A converging lens is thicker in the middle and causes parallel rays of light to converge or come together at a focal point. On the other hand, a diverging lens is thinner in the middle and causes parallel rays of light to diverge or spread out.

In the case of a spherical air bubble embedded in glass, when a ray of light passes through the bubble, it experiences refraction. Refraction occurs when light passes from one medium to another with a different refractive index. The change in the refractive index causes the light rays to bend.

In a spherical air bubble, the refractive index of air is lower than that of glass. As a result, the light rays passing through the bubble diverge or spread out after refraction. This behavior is similar to a diverging lens, which also causes rays of light to spread out.

Therefore, a spherical air bubble behaves like a diverging lens when a ray of light passes through it in a piece of glass.