MCQ
Three identical balls are projected with the same speed at angle $30^o, 45^o$ and $60^o$. Their ranges are $R_1 R_2$ and $R_3$ respectively. Then
- A$R_1 = R_2 = R_3$
- ✓$R_1 = R_3 < R_2$
- C$R_1 < R_2 < R_3$
- D$R_1 > R_2 > R_3$
✓
Answer
Correct option: B.
$R_1 = R_3 < R_2$
b
$30^{\circ}+60^{\circ}=90^{\circ}$
$30^{\circ}+60^{\circ}=90^{\circ}$
$\therefore \mathrm{R}_{1}=\mathrm{R}_{3}$
and we get maximum range
for $\theta=45^{\circ}$
so $\mathrm{R}_{2}$ will be maximum hence $\mathrm{R}_{1}=\mathrm{R}_{3}<\mathrm{R}_{2}$
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
In which of the following cases is the contact force between $A$ and $B$ maximum $(m_A = m_B = 1 kg)$
→A proton, a deuteron and an $\alpha-$particle with same kinetic energy enter into a uniform magnetic field at right angle to magnetic field. The ratio of the radii of their respective circular paths is
→The temperature at which the reading of a Fahrenheit thermometer will be double that of centigrade thermometer is ........ $^o$
→In a scries $LR$ circuit, power of $400\, W$ is dissipated from a source of $250\, V , 50\, Hz$. The power factor of the circuit is $0.8 .$ In order to bring the power factor to unity, a capacitor of value $C$ is added in series to the $L$ and $R$. Taking the value of $C$ as $\left(\frac{ n }{3 \pi}\right) \mu F ,$ then value of $n$ is$......$
→Two immiscible liquid are filled in conical flask as shown in figure. The area of cross section is shown, a small hole of area a is made in lower end of cone. Find speed of liquid flow from hole
Three large identical plates are kept parallel to each other. The outer two plates are maintained at temperatures $T$ and $2 T$, respectively. The temperature of the middle plate in steady state will be close to ........... $T$
→In isothermic process, which statement is wrong
A Carnot freezer takes heat from water at $0\,^oC$ inside it and rejects it to the room at a temperature of $27\,^oC$. The latent heat of ice is $336 \times 10^3\, J\,kg^{-1}$. lf $5\, kg$ of water at $0\,^oC$ is converted into ice at $0\,^oC$ by the freezer, then the energy consumed by the freezer is close to
→Two very long, straight and insulated wires are kept at $90^o$ angle from each other In $xy -$ plane as shown in the figure. These wires carry current of equal magnitude $I$, whose directions are shown in the figure. The net magnetic field at point $P$ will be
→The root mean square speed of hydrogen molecules at $300$ $K$ is $1930\, m/s.$ Then the root mean square speed of oxygen molecules at $900\, K$ will be ....... $m/s$
→