Physics MCQs with Explanations

Explanation

the frequency of incident light and work function of the metal surface is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

v = 2 ×× 106 ms-1 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Isentropic process is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

2KWh is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

J/K is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

material objects and electromagnetic radiation only is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

during the manufacturing process is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

2 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

All of above is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

To find the work done in raising the elevator, we can use the formula for work done against gravity: Work=Force×Distance Given: Force (FFF) = 3.5×10−63.5 \times 10^{-6}3.5×10−6 N Distance (ddd) = 1000 m Substituting the given values: Work=3.5×10−6N×1000m Work=3.5×10−3J If correct, the work done is 3.5×10−33.5 \times 10^{-3}3.5×10−3 Joules.