द्विध्रुव आघूर्ण और क्षेत्र के बीच साठ अंश है। यदि द्विध्रुव आघूर्ण आठ और क्षेत्र दो है तो ऊर्जा कितनी होगी?

The angle between dipole moment and field is sixty degrees. If dipole moment is eight and field is two what is the energy?

Explanation opens after your attempt
Correct Answer

B. ऋण आठ जूल / Negative eight joule

Step 1

Concept

Energy equals negative dipole moment times field times cosine of angle.

Step 2

Why this answer is correct

Cosine of sixty degrees is one half.

Step 3

Exam Tip

Negative eight times two times one half gives negative eight joule. चरण 1: ऊर्जा ऋण द्विध्रुव आघूर्ण गुणा क्षेत्र गुणा कोज्या कोण होती है। चरण 2: साठ अंश का कोज्या एक बटा दो है। चरण 3: ऋण आठ गुणा दो गुणा एक बटा दो से ऋण आठ जूल मिलता है।

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