Category: Physics

No.	Topics.	No.	Topics.
1.	CURRENT ELECTRICITY	2.	DAWN OF MODERN PHYSICS
3.	ELECTROMAGNETIC INDUCTION	4.	ELECTROMAGNETISM
5.	ELECTRONICS	6.	ELECTROSTATICS
7.	FORCE AND MOTION	8.	NUCLEAR PHYSICS
9.	ROTATIONAL AND CIRCULAR MOTION	10.	SPECTRA SPECTRA
11.	THERMODYNAMICS	12.	VECTORS AND EQUILIBRIUM
13.	WAVES

A force F=6i-8j N produces an acceleration of 1 m/s². The mass of the body is…

2 kg
10 kg
14 kg
100 kg

The x-component of a vector is √3 times its y-component. The angle the vector makes with the x-axis is…

30°
45°
60°
90°

The resultant of two forces, 12 N and 5 N, acting on a particle has a magnitude of 13 N. The angle between the two original forces is…

0°
45°
90°
180°

Given A=2i+3j and B=i+j, the component of vector A along vector B is…

5
5/√2
√2
√13

A vector makes an angle of 45° with the x-axis and 60° with the y-axis. The angle it makes with the z-axis must be…

30°
45°
60° or 120°
90°

Two vectors A and B are such that A+B = R and A-B = S. If R is perpendicular to S, then…

A = B (magnitude)
A is perpendicular to B
A is parallel to B
B = 2A

The resultant of F1 = 5N at 37° and F2 = 5N at 323° is… (cos37° ≈ 0.8, sin37° ≈ 0.6)

10 N along the x-axis
8 N along the x-axis
6 N along the y-axis
0 N

A force vector pointing from the origin to the point (3, 4, 12) has a magnitude of…

19
13
√25
√153

A vector has a magnitude of 2√2 and lies on the line y = -x in the second quadrant. Its components are…

(2, -2)
(-2, 2)
(-√2, √2)
(√2, -√2)

The resultant of two perpendicular forces has a magnitude of 10 N. If one force is 6 N, the other force must be…

4 N
16 N
8 N
2 N

A force vector has a magnitude F. If its angle with the horizontal is increased from 0° to 90°, its horizontal component…

increases
decreases
remains constant
first increases then decreases

For the same vector in the previous question, as the angle increases from 0° to 90°, its vertical component…

increases
decreases
remains constant
first decreases then increases

An object is in equilibrium under the action of three forces. F1 = (10i) N, F2 = (-4i + 3j) N. The third force F3 must be…

(-6i – 3j) N
(6i + 3j) N
(-14i – 3j) N
(14i + 3j) N

A vector has a magnitude of 100 units. Its component along the y-axis is 50 units. The angle it makes with the x-axis is either 30° or…

120°
150°
210°
330°

A vector A makes an angle of 30° with the x-axis. A vector B makes an angle of 120° with the x-axis. If both have magnitude F, the magnitude of their resultant is…

2F
F
√2 F
√3 F

A force F1 has components (10, 20). A force F2 is added such that the resultant is (0, 30). The components of F2 must be…

(10, 10)
(-10, 10)
(10, 50)
(-10, 50)

The magnitude of the resultant vector from the previous question is…

3
6
2√3
2

The direction of the resultant vector from the previous question is…

45°
135°
225°
315°

A force of 10√2 N acts at an angle of 315°. Its components (Fx, Fy) are…

(10 N, 10 N)
(-10 N, -10 N)
(10 N, -10 N)
(-10 N, 10 N)

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