If a certain object emits visible waves rather than infrared waves its temperature is

A) higher.
B) lower.
C) the same, temperature doesn't make any difference.


Answer: A

Physics & Space Science

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An ideal solenoid of radius a has n turns per unit length and current I. The magnetic flux ?B through any circular area of radius a inside the solenoid, centered on and perpendicular to the solenoid axis, is

a.
.

b.

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Is dark matter important in other galaxies and galactic clusters?

What will be an ideal response?

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Two square air-filled parallel plates that are initially uncharged are separated by 1.2 mm, and each of them has an area of 190 mm2

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