NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics: Questions 115 - 120 of 2184
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Passage
A = 2i + j + k and B = i + j + k are two vectors.
Question number: 115 (2 of 3 Based on Passage) Show Passage
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
the unit vector perpendicular to A is
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Question number: 116 (3 of 3 Based on Passage) Show Passage
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
the unit vector perpendicular to B is
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Question number: 117
» Kinematics » Scalars and Vectors » Vector Addition and Subtraction
Question
A boat is moving with a velocity 3i + 4j with respect to ground. The water in the river is moving with a velocity – 3i – 4j with respect to ground. The relative velocity of the boat with respect to water is
Choices
| Choice (4) | Response | |
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| a. | 8 |
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| b. | -6 - 8 |
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| c. | 5 - |
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| d. | 6 + 8 |
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Question number: 118
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
The three vectors A = 3i-2j + k, B = i-3j + 5k and C = 2i + j-4k form
Choices
| Choice (4) | Response | |
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| a. | an equilateral triangle |
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| b. | a right angled triangle |
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| c. | no triangle |
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| d. | isosceles triangle |
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Question number: 119
» Kinematics » Velocity-Time Graphs
Question
The speed of a boat is 5km/h in still water. It crosses a river of width 1 km along the shortest possible path in 15 minutes. The velocity of the river water is
Choices
| Choice (4) | Response | |
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| a. | 3 km/h |
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| b. | 4 km/h |
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| c. | 1 km/h |
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| d. | 5 km/h |
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Question number: 120
» Kinematics » Scalars and Vectors » Scalar and Vector Products
Question
If for two vectors A and B, A x B = 0, which of the following is not correct?
(1) They are perpendicular to each other
(2) They act at an angle of 60°
(3) They act at an angle of 30°
(4) They are parallel to each other
Choices
| Choice (4) | Response | |
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| a. | 1,2 and 3 are correct |
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| b. | 1 and 3 are correct |
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| c. | 1 and 2 are correct |
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| d. | 2 and 4 are correct |
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