| ⇦ | 
| ⇨ |
If A and B are two vectors and θ is the angle between them, if (A x B) = √3 (A. B), the value of θ is
Options
(a) 45°
(b) 30°
(c) 90°
(d) 60°
Correct Answer:
60°
Explanation:
| A⃗ x B⃗ | = √3 (A⃗.B⃗)
⇒ AB sin θ = √3AB cos θ
⇒ tan θ = √3 ⇒ θ = 60°
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Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Motion in Plane
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Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The de-Broglie wavelength of an electron is the same as that of a 50 KeV X-ray photon.
- The threshold frequency for a photosensitive metal is 3.3 x 10¹⁴ Hz.
- The condition for obtaining secondary maxima in the diffraction pattern
- The effective length of magnet is 31.4 cm and its pole strength is 0.8Am.
- The area of cross-section of one limb of an U-tube is twice that of the other.
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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