If vectors A = cosωt + sinωt and B = (cosωt/2) + (sinωt/2) are functions of time, then the value of t at which they are orthogonal to each other
1. t=/4ω
2. t=/2ω
3. t=/ω
4. t=0
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySix vectors have the directions as indicated in the figure. Which of the following statements may be true?
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf the magnitude of the sum of two vectors is equal to the magnitude of the difference between the two vectors, the angle between these vectors is:
1. 90°
2. 45°
3. 180°
4. 0°
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf the magnitude of the sum of two vectors is equal to the magnitude of the difference of the two vectors, the angle between these vectors is:
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf two forces of 5 N each are acting along X and Y axes, then the magnitude and direction of resultant is
(1)
(2)
(3)
(4)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo forces are such that the sum of their magnitudes is 18 N and their resultant is perpendicular to the smaller force and the magnitude of the resultant is 12 N. Then the magnitudes of the forces will be:
1. 12 N, 6 N
2. 13 N, 5N
3. 10 N, 8 N
4. 16 N, 2 N
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo forces with equal magnitudes F act on a body and the magnitude of the resultant force is F/3. The angle between the two forces is
(1)
(2)
(3)
(4)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo forces of magnitude F have a resultant of the same magnitude F. The angle between the two forces is
(1) 45°
(2) 120°
(3) 150°
(4) 60°
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAssertion: The graph between P and Q is a straight line when P/Q is constant.
Reason: The straight-line graph means that P is proportional to Q or P is equal to a constant multiplied by Q.
Which one, of the following statements, is correct?
1. If both the assertion and the reason are true, and the reason is the correct explanation of the assertion.
2. If both the assertion and the reason are true but the reason is not the correct explanation of the assertion.
3. If the assertion is true but the reason is false.
4. If the assertion and reason are both false
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo forces A and B have a resultant . If B is doubled, the new resultant is perpendicular to A. Then
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology