Assertion (A): Horizontal range is same for the angle of projecti… - Vidyadip

MCQ

Assertion (A): Horizontal range is same for the angle of projection $\theta$ and (90 - ).
Reason (R): Horizontal range is independent of angle of projection.

A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.

✓

Answer

(c) A is true but R is false.
Explanation: Horizontal range, $R _1=\frac{u^2 \sin 20}{g}$ for angle $\theta$
$
\begin{aligned}
& R_2=\frac{u^2 \sin 2\left(90^{\circ}-\theta\right)}{g}=\frac{u^2 \sin 2 \theta}{g} \text { for angle }\left(90^{\circ}-\theta\right) \\
& \therefore R_1=R_2
\end{aligned}
$
Hence horizontal range is same for angle of projection $\theta$ and $\left(90^{\circ}-\theta\right)$ and the horizontal range depends on the angle of projection.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Assertion (A) & Reason (B) MCQ" from Model Paper 6→Model Paper 6 — all question types→Physics STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Assertion (A): Specific heat capacity and molar specific heat capacity both have same units.
Reason (R): Specific heat capacity and molar specific heat capacity both do not depend on mass.

Assertion (A): Speed is constant in uniform circular motion.
Reason (R): Acceleration is constant in uniform circular motion.

Assertion (A): According to the law of conservation of mechanical energy change in potential energy is equal and opposite to the change in kinetic energy.
Reason (R): Mechanical energy is not a conserved quantity.

Assertion: When a glass of hot milk is placed in a room and allowed to cool, its entropy decreases.
Reason: Allowing hot object to cool does not violate the second law of thermodynamics.

Assertion (A): The division of a vector by another vector is not defined.
Reason (R): The division of a vector by a direction is not possible.

Assertion: If two bodies are in thermal equilibrium in one frame, they will be in thermal equilibrium in all frames.
Reason: The transfer of energy from a hot body to a cold body is a non mechanical process, i.e., the energy is transferred from one body to the other, without any mechanical work.

Assertion: Reversible system are difficult to find in real world.
Reason: Most processes are dissipative in nature.

Assertion (A): Two particle of different mass, projected with same velocit, the maximum height attained by both the particle will be same.
Reason (R): The maximum height of projectile is independent of patricle mass. is equal to maximum height attained by projectile.

Assertion: When percentage errors in the measurement of mass and velocity are $1 \%$ and $2 \%$ respectively, the percentage error in KE is $5 \%$.
Reason: $\frac{\Delta E}{E}=\frac{\Delta m}{m}+\frac{2 \Delta v}{v}$

Assertion: Two particles moving in the same direction do not lose all their energy in a completely inelastic collision.
Reason: Principle of conservation of momenturm holds true for all kinds of collisions.