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The following question based on light, heat, thermodynamics, wave motion, sound, optics & oscillations topic of general science mcq
(a) The ball gets stuck because of the diameter of the hole decrease on expansion
(b) The ball will still pass through because the hole diameter does not change
(c) The ball can still pass through the ring as diameter expands on heating
(d) The ball will pass through because there is no change in the ring
The correct answers to the above question in:
Answer: (c)
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Read more light heat thermodynamics wave sound optics oscillation Based General Science Questions and Answers
Question : 1
Some common mediums in which the speed of sound waves is measured are mentioned below?
- Air
- Steel
- Copper
- Water
a) 1 < 4 < 3 < 2
b) 1 < 4 < 2 < 3
c) 4 < 1 < 2 < 3
d) 4 < 1 < 3 < 2
Answer »Answer: (a)
The speed of sound is maximum in solids
Vsolid > Vliquid > Vgas.
Steel is more elastic than copper, hence the speed of sound is greater in steel than in copper.
Question : 2
Optical fibre works on the principle of
a) Scattering
b) Refraction
c) Total internal reflection
d) Interference
Answer »Answer: (c)
Question : 3
Which of the following statements is correct ?
a) Frequency of ultrasonic waves is of the same order as that of X-rays
b) Ultrasonic waves can travel in vacuum
c) Wavelength of ultrasonic waves is of the same order as that of microwaves
d) Speed of ultrasonic waves is of the same order as that of light
Answer »Answer: (a)
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