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| 7 | 35 Most Important MCQS For Class 11 Projectile Motion | 292 |
| 8 | Q19.
A projectile is projected with a speed of 40 m/s at an angle of 30°. The maximum height attained is
A) 10 m
B) 20 m
C) 30 m
D) 40 m
⸻
Q20.
A projectile is projected with a speed of 50 m/s at 45°. The horizontal range is
A) 125 m
B) 200 m
C) 250 m
D) 300 m
⸻
Q21.
A ball is projected horizontally with a speed of 25 m/s from the top of a 125 m high tower. The time taken to reach the ground is
A) 3 s
B) 4 s
C) 5 s
D) 6 s
⸻
Q22.
A projectile is projected with a speed of 20√2 m/s at 45°. Its speed after 2 s is
A) 20 m/s
B) 10√5 m/s
C) 10√2 m/s
D) 20√2 m/s
⸻
Q23.
A projectile is projected with a speed of 30 m/s at 60°. The maximum height is
A) 22.5 m
B) 30 m
C) 33.75 m
D) 45 m
⸻
Q24.
A projectile is projected at an angle 30°. If its time of flight is 4 s, the initial speed is
A) 30 m/s
B) 40 m/s
C) 50 m/s
D) 60 m/s
⸻
Q25.
A projectile is fired with speed 40 m/s. The maximum possible horizontal range is
A) 120 m
B) 140 m
C) 160 m
D) 180 m
⸻
Q26.
A projectile is projected with speed 25 m/s at 53°. The horizontal distance covered in the first 2 s is
A) 20 m
B) 30 m
C) 40 m
D) 50 m
⸻
Q27.
Two projectiles are projected with the same speed at 30° and 60°. The ratio of their maximum heights is
A) 1 : 1
B) 1 : 2
C) 1 : 3
D) 1 : 4
⸻
Q28.
A projectile is projected with speed 50 m/s at 37°. The vertical component of velocity after 2 s is
A) 0 m/s
B) 10 m/s
C) 20 m/s
D) 30 m/s
⸻
Q29. (Assertion–Reason)
Assertion (A): At the highest point of projectile motion, the vertical component of velocity is zero.
Reason (R): The horizontal component of velocity remains constant throughout the motion.
A) Both A and R are true and R is the correct explanation.
B) Both A and R are true but R is not the correct explanation.
C) A is true but R is false.
D) A is false but R is true.
⸻
Q30.
A projectile is projected with speed 40 m/s at 60°. The time required to reach the maximum height is
A) 2 s
B) 2√3 s
C) 3 s
D) 4 s
⸻
Q31.
A projectile passes through the point (24 m, 12 m) after 2 s. Its initial speed is
A) 15 m/s
B) 18 m/s
C) 20 m/s
D) 25 m/s
⸻
Q32.
A ball is projected horizontally from a 20 m high building with speed 15 m/s. The magnitude of velocity just before hitting the ground is
A) 20 m/s
B) 25 m/s
C) 30 m/s
D) 35 m/s
⸻
Q33.
The ratio of the maximum heights of projectiles projected at 30° and 60° with the same speed is
A) 1 : 2
B) 1 : 3
C) 1 : 4
D) 3 : 1
⸻
Q34.
A projectile has a time of flight of 6 s and a horizontal range of 180 m. The horizontal component of its initial velocity is
A) 20 m/s
B) 25 m/s
C) 30 m/s
D) 35 m/s
⸻
Q35.
A projectile is projected with speed 20 m/s. To obtain the maximum horizontal range, the angle of projection should be
A) 30°
B) 37°
C) 45°
D) 60° | 302 |
| 9 | CLASS 11 PHYSICS – PROJECTILE MOTION
Numerical MCQ Test (Questions 1–18)
Use g = 10 m/s²
Q1.
A projectile is projected with a speed of 20 m/s at an angle of 37°. The maximum height attained is
A) 5.4 m
B) 7.2 m
C) 9.6 m
D) 12.8 m
⸻
Q2.
A projectile is projected with a speed of 25 m/s at an angle of 53°. Its time of flight is
A) 3 s
B) 4 s
C) 5 s
D) 6 s
⸻
Q3.
A projectile is projected with a speed of 30 m/s at 30°. Its horizontal range is
A) 39 m
B) 45 m
C) 52 m
D) 78 m
⸻
Q4.
A ball is projected horizontally from a height of 45 m with a speed of 20 m/s. The horizontal distance travelled before striking the ground is
A) 40 m
B) 50 m
C) 60 m
D) 70 m
⸻
Q5.
A projectile is projected with a speed of 50 m/s at 37°. Its speed at the highest point is
A) 20 m/s
B) 30 m/s
C) 40 m/s
D) 50 m/s
⸻
Q6.
Two projectiles are projected with the same speed at angles 30° and 60°. Their
A) Maximum heights are equal
B) Ranges are equal
C) Times of flight are equal
D) Horizontal velocities are equal
⸻
Q7.
A projectile has a range of 80 m when projected at 45°. Its initial speed is
A) 20 m/s
B) 24 m/s
C) 28.3 m/s
D) 32 m/s
⸻
Q8.
A projectile reaches its maximum height after 3 s. If the angle of projection is 30°, its initial speed is
A) 40 m/s
B) 50 m/s
C) 60 m/s
D) 70 m/s
⸻
Q9.
A projectile is projected at 45° with a speed of 20 m/s. Its range is
A) 20 m
B) 30 m
C) 40 m
D) 50 m
⸻
Q10.
A projectile is projected with speed 40 m/s at 37°. Its coordinates after 2 s are
A) (64 m,16 m)
B) (48 m,12 m)
C) (64 m,8 m)
D) (48 m,20 m)
⸻
Q11.
A projectile is projected with a speed of 50 m/s at 53°. The maximum height is
A) 60 m
B) 80 m
C) 100 m
D) 120 m
⸻
Q12.
The horizontal range of a projectile projected at 45° is 180 m. The time of flight is
A) 4 s
B) 6 s
C) 8 s
D) 9 s
⸻
Q13.
A ball is projected horizontally from a cliff 80 m high with speed 15 m/s. The magnitude of velocity just before hitting the ground is
A) 35 m/s
B) 45 m/s
C) 55 m/s
D) 65 m/s
⸻
Q14.
A projectile is projected at 60° with speed 40 m/s. Its horizontal velocity remains
A) 10 m/s
B) 20 m/s
C) 30 m/s
D) 40 m/s
⸻
Q15.
A projectile takes 8 s to return to the ground. The vertical component of initial velocity is
A) 20 m/s
B) 30 m/s
C) 40 m/s
D) 50 m/s
⸻
Q16.
A projectile is projected at an angle θ. If its maximum height is equal to its horizontal range, θ equals
A) 30°
B) 45°
C) 60°
D) tan⁻¹(4)
⸻
Q17.
Two projectiles are projected with the same speed at complementary angles. The ratio of their ranges is
A) 1:1
B) 1:2
C) 2:1
D) √3:1
⸻
Q18.
A projectile is projected with speed 25 m/s at 37°. The height after 2 s is
A) 4 m
B) 8 m
C) 12 m
D) 16 m | 311 |
| 10 | CBSE CLASS 12 CHEMISTRY COMPARTMENT EXAM , BIOMOLECULES Most Repeated Board Questions (Must Do)
⭐ Why is sucrose a non-reducing sugar?
⭐ Why is fructose a reducing sugar?
⭐ Differentiate between starch and cellulose.
⭐ What is denaturation of proteins?
⭐ What are essential amino acids?
⭐ Explain zwitter ion formation.
⭐ Describe the cyclic structure of glucose.
⭐ Differentiate between DNA and RNA.
⭐ Explain the structure and functions of proteins.
⭐ Classify carbohydrates with examples.
These 10 questions have appeared repeatedly in CBSE Board examinations and are considered the highest-priority Biomolecules questions for Class 12 Chemistry revision. | 736 |
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