All Free Physics MCQs with Answers

• A. A=1
• B. B=2
• C. C=3
• D. D=4

Explanation: They just made the question confusing In fact it's very simple We have to find the velocity Distance is given as x=t³ Where t=1 So x=1 We…

• A. 25
• B. 20
• C. 16
• D. 8

Explanation: We have to use Newton's second law, F = ma, in this question. Usually, we use SI units, i.e.

• A. 5km/hr²
• B. 5km/sec²
• C. 5km_hr/sec
• D. 5km/hr_sec

Explanation: The acceleration of the particle cannot be determined with the given information.

• A. 9.8 m/s²
• B. 980 m/s
• C. 98 m/s²
• D. -9.8 m/s

Explanation: Using the first equation of motion: v = u + at final velocity(v) =0m/s initial velocity (u) =98m/s time (t) = 10 acceleration (a) = ?

• A. 2s
• B. 4s
• C. 8s
• D. 16s

Explanation: To solve this problem, we use the second equation of motion: S = ut + ½ gt2.

• A. A/4 ms^-2
• B. 4/A ms^-2
• C. 4 ms^-2
• D. 4A ms^-2

Explanation: The given equation for distance is x = 20t + 2At^2. To find acceleration, we need to differentiate this equation with respect to…

• A. 40m
• B. 80m
• C. 20m
• D. 100m

Explanation: Since,s = ut + ½ at²u = 0, a = gt = 4sg ≈ 10 ms-²Then,s = (0)(4) + ½ (10)(4)²s = 0 + ½ (10)(16)s = ½ (160)s = 80m

• A. 1.96 m/s
• B. 9.80 m/s
• C. 49.0 m/s
• D. 98.0 m/s

Explanation: List the known and unknown values.u = initial velocity = 0 m/sv = final velocity = ?m/sa = g = acceleration due to gravity = 9.8 m/s²t =…

• A. 1.3 m
• B. 2.5 m
• C. 5.0 m
• D. 10.0 m

Explanation: We must calculate the length of the tube, i.e distance traveled by the feather. We can use the formula for linear motion s = ut + 1/2at2.

• A. 1.5N
• B. 2.5N
• C. 4.5N
• D. 6.5N

Explanation: Since there are 2 forces, the minimum resultant force is when they are pointing in opposite directions i.e.

• A. Concurrent
• B. Non-concurrent
• C. Parallel
• D. Anti-parallel

Explanation: "A group of forces acting on an object is called a coplanar system of forces if the line of action of all the forces lies in the same…

• A. 14 N
• B. 2N
• C. 10N
• D. 48 N

Explanation: When two forces are acting at right angles to each other, the resultant can be calculated by using the Pythagorean Theorem.One of the…

• A. n^= A→/|A|
• B. n^= (A.|A|)-
• C. n^= n^A→
• D. n^= A/A-

Explanation: n^= A→/|A|: This equation represents the unit vector n^ in the direction of the vector A→.

• A. 0.45N
• B. 5N,9N
• C. 20N,25N
• D. 0N,45N

Explanation: maximum resultant: 45 = a + b minimum resultant: 5 = a - b Solve for a in the first equation then substitute it into the second equation…

• A. 90°
• B. 60°
• C. 45°
• D. 120°

Explanation: 120°: If two vectors of the same magnitude are oriented at 120 degrees to each other, the resultant vector will have a magnitude that is…

• A. One
• B. Two
• C. Three
• D. Four

Explanation: The minimum number of unequal forces whose vector sum can be zero is three. This is known as the triangle law of vector addition.

• A. 0°
• B. 90°
• C. 120°
• D. 180°

Explanation: Both vectors have the same magnitude, F, and the resultant is F+F = 2F.

• A. zero
• B. 3
• C. √3
• D. 1.73

Explanation: The three vectors act as shown in the diagram above. According to the head-to-tail rule, the resultant is obtained by joining the head of…

• A. Electric field intensity
• B. Gravitational field intensity
• C. Magnetic induction
• D. Electromotive force

Explanation: The correct answer is electromotive force (EMF), which is a scalar quantity.

• A. Couple
• B. Couple arm
• C. Collinear forces
• D. Torque

Explanation: The correct answer is a Couple. A couple consists of two equal, anti-parallel, and nonconcurrent forces that act to produce a rotational…