MCQ
The horizontal range is four times the maximum height attained by a projectile. The angle of projection is
- A$90^{\circ}$
- B$60^{\circ}$
- ✓$45^{\circ}$
- D$30^{\circ}$
✓
Answer
Correct option: C.
$45^{\circ}$
(c) $R=4 H \cot \theta$, if $R=4 H$ then $\cot \theta=1 \Rightarrow \theta=45^{\circ}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A cyclic process $A B C D$ is shown in the figure $P$ - $V$ diagram. Which of the following curves represent the same process
→Water does not wet an oily glass because
300 Joule of work is done in sliding up a $2 \mathrm{~kg}$ block on an inclined plane to a height of 10 metres. Taking value of acceleration due to gravity ' $g$ ' to be $10 \mathrm{~m} / \mathrm{s}^2$, work done against friction is
→When an ideal diatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas, is
A given system undergoes a change in which the work done by the system equals the decrease in its internal energy. The system must have undergone an
The ratio of diameters of two wires of same material is $n: 1$. The length of wires are $4 m$ each. On applying the same load, the increase in length of thin wire will be
→The total power content of an AM wave is $900 \mathrm{~W}$. For $100 \%$ modulation, the power transmitted by each side band is
→The period of oscillation of a simple pendulum in the experiment is recorded as $2.63 s , 2.56 s , 2.42 s , 2.71 s$ and $2.80 s$ respectively. The average absolute error is
→Find out the e.m.f. produced when the current changes from 0 to 1 $A$ in 10 second, given $L=10 \mu H$
→A beam of fast moving alpha particles were directed towards a thin film of gold. The parts $A^{\prime}, B^{\prime}$ and $C^{\prime}$ of the transmitted and reflected beams corresponding to the incident parts $A, B$ and $C$ of the beam, are shown in the adjoining diagram. The number of alpha particles in
→