If →A×→B=→C+→D, then which of the following statement is correct?
1. | →B must be perpendicular to →C |
2. | →A must be perpendicular to →C |
3. | Component of →C along →A = Component of →D along →A |
4. | Component of →C along →A = - (Component of →D along →A) |
What is the maximum value of 5sinθ−12cosθ?
1. 12
2. 17
3. 7
4. 13
Find dydx, if y=t3+1 and x=t2+3:
1. t23
2. t2
3. 3t2
4. t2
The volume flow rate of water flowing out of a tubewell is given by Q=(3t2−4t+1) m3/sec. What volume of water will flow out of the tubewell in the third second if the volume flow rate is defined as Q=dVdt?
1. 10 m3
2. 17 m3
3. 36 m3
4. 34 m3
Given below are two statements:
Statement I: | A vector must have, magnitude and direction. |
Statement II: | A physical quantity cannot be called a vector if its magnitude is zero. |
1. | Statement I is false but Statement II is true. |
2. | Both Statement I and Statement II are true. |
3. | Both Statement I and Statement II are false. |
4. | Statement I is true but Statement II is false. |
Given below are two statements:
Statement I: | Three vectors equal in magnitude cannot produce zero resultant. |
Statement II: | Minimum four vectors are required to produce zero resultant. |
1. | Statement I is false but Statement II is true. |
2. | Both Statement I and Statement II are true. |
3. | Both Statement I and Statement II are false. |
4. | Statement I is true but Statement II is false. |
Given are two vectors, →A=(2ˆi−5ˆj+2ˆk) and →B=(4ˆi−10ˆj+cˆk). What should be the value of c so that vector →A and →B would becomes parallel to each other?
1. 1
2. 2
3. 3
4. 4
Two forces of the same magnitude are acting on a body in the East and North directions, respectively. If the body remains in equilibrium, then the third force should be applied in the direction of:
1. North-East
2. North-West
3. South-West
4. South-East
If →R is the resultant of two vectors →A and →B and →R' is the difference in them, and |→R| = |→R'|, then:
(1) →A ∥ →B
(2) →A ⊥ →B
(3) →A is antiparallel to →B
(4) →A makes an angle of 120° with →B
If |→A|≠|→B| and |→A×→B|=|→A⋅→B|, then:
1. | →A⊥→B |
2. | →A || →B |
3. | →A is antiparallel to →B |
4. | →A is inclined to →B at an angle of 45∘ |