MCQ practice · SSC Physics Board questions · Chapter 3: Force
Which force is responsible for the heat we get from the sun?
Think it through first, then pick an option.
- a Weak nuclear
- b Strong nuclear
- c Electromagnetic
- d Gravity
Answer and explanation
Correct answer: b Strong nuclear
In the sun small nuclei join and release a huge amount of energy, and the exam answer is the strong nuclear force.
Why the other options are wrong
- a Weak nuclear: The weak nuclear force lets beta rays out of a radioactive nucleus; the force behind the sun's light and heat is the strong nuclear force.
- c Electromagnetic: The electromagnetic force is the force of charges and magnets; it is not the source of the sun's light and heat.
- d Gravity: The gravitational force keeps the earth going round the sun; it is not the source of the sun's light and heat.
More board questions on this topic
- Which is the weakest force?
- Which is the weakest of the fundamental forces?
- Due to which force are beta (β) rays, or electrons, emitted from a…
- Based on strength, which of the following is correct?
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