In an orbital motion, the angular momentum vector is
Options
(a) along the radius vector (b) parallel to the linear momentum (c) in the orbital plane (d) perpendicular to the orbital plane
Correct Answer: […]
If |A x B|= √3 A.B , then the value of |A + B|is
Options
(a) ( A² + B² + AB)¹/² (b) ( A² + B² + AB / √3)¹/² (c) (A + […]
The component of vector A=2i+3j along the vector i+j is
Options
(a) 5/√2 (b) 10√2 (c) 5√2 (d) 5
Correct Answer:
5/√2
Explanation:
No explanation available. Be the first to write the explanation for […]
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
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(a) 45° (b) 30° (c) 90° […]
Given A=4i+6j and B=2i+3j. Which of the following is correct?
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(a) A x B =0 (b) A.B=24 (c) (|A|/|B|)=1/2 (d) A and B are anti parallel
Correct Answer:
A x B =0
Explanation: […]
If A=4i+4j+4k and b=3i+j+4k, then angle between vectors A and B is
Options
(a) 180ﾟ (b) 90ﾟ (c) 45ﾟ (d) 0ﾟ
Correct Answer:
90ﾟ
Explanation:
No explanation available. Be the first to write the […]
The horizontal range and the maximum height of a projectile are equal. The angle of projection of the projectile is :
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(a) θ = tan⁻¹(1/4) (b) θ = tan⁻¹(4) (c) θ = tan⁻¹(2) […]
The angle between the two vectors A = 3i + 4j + 5k and B = 3i + 4j – 5k will be
Options
(a) 90ﾟ (b) 0ﾟ (c) 60 ﾟ (d) 45ﾟ
Correct […]
A particle is released from rest from a tower of height 3h, the ratio of time of fall for equal heights h (t₁ : t₂ : t₃ is)
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(a) √3 : √2 : 1 […]
A particle moves in a circle of radius 5 cm with constant speed and time period 0.2πs. The acceleration of the particle is
Options
(a) 15 m/s² (b) 25 m/s² (c) 36 m/s² (d) […]
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