TS EAMCET · Physics · Gravitation
If a body dropped freely from a height of 20 m reaches the surface of a planet with a velocity of \(31.4 \mathrm{~ms}^{-1}\), then the length of a simple pendulum that ticks seconds on the planet is
- A 1 m
- B 0.625 m
- C 2.5 m
- D 2 m
Answer & Solution
Correct Answer
(C) 2.5 m
Step-by-step Solution
Detailed explanation
\(\mathrm{h}=20 \mathrm{~m}, \mathrm{v}=31.4 \mathrm{~ms}^{-1}\) By conservation of energy…
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 long straight parallel wires \(A\) and \(B\) separated by 5 m carry currents 2 A and 6 A respectively in the same direction. The resultant magnetic field due to the two wires at a point of 2 m distance from the wire \(A\) in between the two wires isTS EAMCET 2024 Medium
- The magnetic field due to a current carrying circular coil on its axis at a distance of \(\sqrt{2} \mathrm{~d}\) from the centre of the coil is B. If d is the diameter of the coil, then the magnetic field at the centre of the coil isTS EAMCET 2025 Medium
- A cannon shell fired breaks into two equal parts at its highest point. One part retraces the path to the cannon with kinetic energy \(E_1\) and kinetic energy of the second part is \(E_2\), relation between \(E_1\) and \(E_2\) isTS EAMCET 2014 Hard
- A bullet of mass \(25 \mathrm{~g}\) moves horizontally at a speed of \(250 \mathrm{~m} / \mathrm{s}\) is fired into a wooden block of mass \(1 \mathrm{~kg}\) suspended by a long string. The bullet crosses the block and emerges on the other side. If the centre of the mass of the block rises through a height of \(20 \mathrm{~cm}\). The speed of the bullet as it emerges from the block is (take, \(g=10 \mathrm{~m} / \mathrm{s}^2\) )TS EAMCET 2020 Medium
- The half-life of a radiocative isotope is \(30 \mathrm{~h}\). How long will it take to get reduced to \(12.5 \%\) of its initial amount?TS EAMCET 2020 Easy
- A small object slides down with initial velocity equal to zero from the top of a smooth hill of height . The other end of the hill is horizontal and is at height as shown in the figure. The horizontal distance covered by the object from the end of the hill to the ground is
TS EAMCET 2022 Easy
More PYQs from TS EAMCET
- Newton's law of cooling is a special case ofTS EAMCET 2020 Medium
- A crystal of intrinsic silicon at room temperature has a carrier concentration of \(1.6 \times 10^{16} / \mathrm{m}^3\). If the donor concentration level is \(4.8 \times 10^{20} / \mathrm{m}^3\), then the concentration of holes in the semiconductor isTS EAMCET 2014 Easy
- A tank of height \(15 \mathrm{~m}\) and cross-section area \(10 \mathrm{~m}^2\) is filled with water. There is a small hole of cross-section area \(a\) which is much smaller than the container, located at a height of \(12 \mathrm{~m}\) from the base of the container. How much force should be applied with a piston at the top level, so that the water coming out of the hole hits the ground at a distance of \(16 \mathrm{~m}\) ? (Take, density of water \(=1000 \mathrm{~kg} \mathrm{~m}^{-3}\) )
TS EAMCET 2018 Medium - A mass of , initially at a height of above an uncompressed spring with spring constant is released from rest to fall on the spring. Taking the acceleration due to gravity as and neglecting the air resistance, the compression of the spring in isTS EAMCET 2019 Hard
- Tanks \(A\) and \(B\) open at the top contain two different liquids upto certain height in them. A hole is made to the wall of each tank at a depth \(h\) from the surface of the liquid. The area of the hole in \(B\) is twice that of in \(A\). If the liquid mass flux through each hole is equal, then the ratio of the densities of the liquids respectively, isTS EAMCET 2002 Easy
- Match the following.
(Take the relative strength of the strongest fundamental forces in nature as one)I (Fundamental Forces in nature) II ( Relative Strength) (A) Strong nuclear force (e) \(10^{-2}\) (B) Weak nuclear force (f) \(1\) (C) Electromagnetic force (g) \(10^{10}\) (D) Gravitational force (h) \(10^{13}\) (I) \(10^{-39}\) TS EAMCET 2023 Easy