The amount of heat required to change the state of 1 kg of a substance from solid to liquid at its melting point without any change in temperature is called: MCQ with Answer and Explanation
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Question #1
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The resolving power of an astronomical telescope can be significantly increased by:
Correct Answer: Option B
Explanation:
Resolving power is a telescope's ability to distinguish closely spaced objects (like double stars) as separate. It is proportional to D / lambda, where D is the diameter (aperture) of the objective lens and lambda is the wavelength of light. Increasing the aperture D directly and strictly increases the resolving power.
Resolving power is a telescope's ability to distinguish closely spaced objects (like double stars) as separate. It is proportional to D / lambda, where D is the diameter (aperture) of the objective lens and lambda is the wavelength of light. Increasing the aperture D directly and strictly increases the resolving power.
Question #2
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The part of human eye that controls amount of light entering is
Question #3
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Two 60 W bulbs are connected in series across 220 V. Each bulb power becomes (approximately)
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