Measuring Time Quiz PDF: Questions and Answers - 71

MCQ 351: In pendulum, the heavy metal ball is called

1. String
2. Gong
3. Hook
4. Bob

MCQ 352: Symbol for refractive index is equal to

1. i
2. r
3. n
4. r_n

MCQ 353: Sound waves can pass through

1. vacuum
2. air only
3. air and other states of matter
4. vacuum and other states of matter

MCQ 354: Angle of incidence is equal to angle of reflection is a

1. true law of reflection
2. false law of reflection
3. neutral law of reflection
4. it?s a law of refraction

MCQ 355: A horizontal line which passes through the cortical center of the lens is termed as

1. middle axis
2. horizontal axis
3. principal axis
4. imaginary diameter