Physics Test 68

Result

Physics Test 68

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Weekly Quiz Competition

Question 1
4 / -1

In the given figure, each box represents a function machine. A function machine illustrates what it does with the input.

Which of the following statements is correct ?

A
z = 2x + 3

B
z = 2(x + 3)

C

D
Question 2
4 / -1

Find the value of sin (4π + π/3):-

A
1/2

B
√3/2

C
1

D
1/2

Solution
Question 3
4 / -1

Which of the following match is correct :-

A
1

B
2

C
3

D
4
Question 4
4 / -1

If particle's position x as a function of time is give by x = –t² + 4t + 4 then maxima of x occurs when:-

A
t = 1

B
t = 2

C
t = 4

D
t = 8

Solution

For maxima dx/dt = 0

–2t + 4 = 0 ⇒ 4 = 2t ⇒ t = 2
Question 5
4 / -1

A
0

B
1

C
2

D
4

Solution
Question 6
4 / -1

Magnitude of unit vector along direction of

A
√3

B
√5

C
√2

D
1
Question 7
4 / -1

The resultant of two forces of 10N and 5N can never be

A
12 N

B
5N

C
10 N

D
4N

Solution

R_min ≤ R ≤ R_max
Question 8
4 / -1

What is the angle between vector and the Z-axis :-

A
0°

B
45°

C
60°

D
90°

Solution
Question 9
4 / -1

Find the projection of

A
-1 / √2

B
- √2

C
√2

D
None of these

Solution
Question 10
4 / -1

are parallel to each other then value of α can be –

A
6

B
-6

C
1.5

D
- 1.5