JEE Mains · Physics · STD 11 - 3.2 motion in plane
Two bodies are projected from ground with same speeds \(40 ms ^{-1}\) at two different angles with respect to horizontal. The bodies were found to have same range. If one of the body was projected at an angle of \(60^{\circ}\), with horizontal then sum of the maximum heights, attained by the two projectiles, is \(.......m\). (Given \(g =10 ms ^{-2}\) )
- A \(78\)
- B \(77\)
- C \(80\)
- D \(79\)
Answer & Solution
Correct Answer
(C) \(80\)
Step-by-step Solution
Detailed explanation
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- Two identical conducting spheres \(\mathrm{P}\) and \(\mathrm{S}\) with charge \(Q\) on each, repel each other with a force \(16 \mathrm{~N}\). A third identical uncharged conducting sphere \(\mathrm{R}\) is successively brought in contact with the two spheres. The new force of repulsion between \(\mathrm{P}\) and \(\mathrm{S}\) is what?JEE Mains 2024 Hard
- An infinitely long current carrying wire and a small current carrying loop are in the plane of the paper as shown. the radius of the loop is \(a\) and distance of its centre from the wire is \(d (d >> a)\). If the loop applies a force \(F\) on the wire then
JEE Mains 2019 Hard - A rod of length \(10\) cm lies along the principle axis of a concave mirror of focal length \(10\) cm as shown in figure. The length of the image is _____ cm.
JEE Mains 2026 Medium -
A bar magnet has total length \(2 l=20\) units and the field point \(P\) is at a distance \(\mathrm{d}=10\) units from the centre of the magnet. If the relative uncertainty of length measurement is \(1 \%\), then uncertainty of the magnetic field at point P is :JEE Mains 2025 Hard - A metallic rod oflength '\(l\)' is tied to a string oflength \(2l\). and made to rotate with angular speed w on a horizontal table with one end of the string fixed. Ifthere is a vertical magnetic field '\(B\)' in the region, the \(e.m.f.\) induced across the ends of the rod is
JEE Mains 2013 Medium - A conducting metal circular-wire-loop of radius \(r\) is placed perpendicular to a magnetic field which varies with time as \(B = {B_0}{e^{\frac{{ - t}}{\tau }}}\) , where \(B_0\) and \(\tau \) are constants, at time \(t = 0\). If the resistance of the loop is \(R\) then the heat generated in the loop after a long time \(\left( {t \to \infty } \right)\) isJEE Mains 2016 Hard
More PYQs from JEE Mains
- Four bulbs \(B_1 , B_2, B_3\) and \(B_4\) of \(100\, W\) each are connected to \(220\, V\) main as shown in the figure. The reading in an ideal ammeter will be ............... \(A\)
JEE Mains 2014 Hard - A wire \(A\), bent in the shape of an arc of a circle, carrying a current of \(2\, A\) and having radius \(2\, cm\) and another wire \(B ,\) also bent in the shape of arc of a circle, carrying a current of \(3\, A\) and having radius of \(4\, cm ,\) are placed as shown in the figure. The ratio of the magnetic fields due to the wires \(A\) and \(B\) at the common centre \(O\) is
JEE Mains 2020 Hard - Let \(y=y(x)\) be the solution of the differential equation \(\left(x-x^{3}\right) d y=\left(y+y x^{2}-3 x^{4}\right) d x, x>2\). If \(y(3)=3\), then \(y(4)\) is equal to :JEE Mains 2021 Hard
- Let one end of a focal chord of the parabola \( y^{2}=16x \) be (16, 16). If \( P(\alpha,\beta) \) divides this focal chord internally in the ratio 5 : 2 then the minimum value of \( \alpha+\beta \) is equal to :JEE Mains 2026 Medium
- A person lives in a high-rise building on the bank of a river \(50\, m\) wide. Across the river is a well lit tower of height \(40\, m\). When the person, who is at a height of \(10\, m\), looks through a polarizer at an appropriate angle at light of the tower reflecting from the river surface, he notes that intensity of light coming from distance \(X\) from his building is the least and this corresponds to the light coming from light bulbs at height \('Y'\) on the tower. The values of \(X\) and \(Y\) are respectively close to (refractive index of water \( \simeq \frac{4}{3})\)
JEE Mains 2013 Hard - Let \(f: [1, \infty) \rightarrow \mathbf{R}\) be a differentiable function defined as \(f(x) = \int_1^x f(t)\,dt + (1-x)(\log_e x - 1) + e\). Then the value of \(f(f(1))\) is :JEE Mains 2026 Hard