Mathematics In Physics Test

Result

Mathematics In Physics Test - 6

Score
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Rank
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Weekly Quiz Competition

Question 1
1 / -0

A
0

B
1

C
2

D
4

Solution
Question 2
1 / -0

For the figure -

A
A+B=C

B
B+C=A

C
C+A=B

D
A+B+C=0

Solution

Triangle law of vector addition
Question 3
1 / -0

A
9 Joule

B
41 Joule

C
-3 Joule

D
None of these

Solution
Question 4
1 / -0

A vector A points, vertically upward and, B points towards north. The vector product A×B is -

A
along west

B
along east

C
zero

D
vertically downward

Solution
Question 5
1 / -0

A
√29 units

B
31 units

C
√37 units

D
√41 units

Solution

= √29 units
Question 6
1 / -0

The displacement of a particle is given by y = a + bt + ct²−dt⁴. The initial velocity and initial acceleration, respectively, are:

A
b, -4d

B
-d, 2c

C
b, 2c

D
2c, -4d

Solution
Question 7
1 / -0

The momentum is given by p=4t+1, the force at t=2s is-

A
4 N

B
8 N

C
10 N

D
15 N

Solution

F = dp / dt

= 4 N

So force is constant always
Question 8
1 / -0

If the momentum of a particle is given by P=(180-8t) kg m/s, then its force will be-

A
Zero

B
8 N

C
-8 N

D
4 N

Solution
Question 9
1 / -0

If f(x) = x² − 2x + 4, then f(x) has:

A
a minimum at x=1.

B
a maximum at x=1.

C
no extreme point.

D
no minimum.

Solution
Question 10
1 / -0

A particle is moving along x-axis. The velocity v of particle varies with its position x as v = 1/x. Find velocity of particle as a function of time t given that at t=0, x=1

A

B

C

D
None of these

Solution