NEET · Physics · STD 11 - 5. work,energy,power and collision
Water falls from a height of \(60\, \mathrm{~m}\) at the rate of \(15 \,\mathrm{~kg} / \mathrm{s}\) to operate a turbine. The losses due to frictional force are \(10\, \%\) of the input energy. How much 10.Power is generated by the turbine? \(\left(g=10\, \mathrm{~m} / \mathrm{s}^{2}\right)\) (In \(\mathrm{~kW}\))
- A \(10.2\)
- B \(8.1\)
- C \(12.3\)
- D \(7.0\)
Answer & Solution
Correct Answer
(B) \(8.1\)
Step-by-step Solution
Detailed explanation
\(\mathrm{E}=\mathrm{mgh}\) \(\mathrm{P}_{\text {input }}=\frac{\mathrm{mgh}}{\mathrm{t}}\)
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
- The ratio of the magnitude of the magnetic field and electric field intensity of a plane electromagnetic wave in free space of permeability \(\mu_0\) and permittivity \(\varepsilon_0\) is (Given that \(c\) - velocity of light in free space)NEET 2022 Easy
- Which of the following acts as a circuit protection device?NEET 2019 Easy
- A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :-
NEET 2025 Hard - The dimensions \(\left[ MLT ^{-2} A ^{-2}\right]\) belong to the :NEET 2022 Medium
- The kinetic energies of two similar cars \(A\) and \(B\) are 100 J and 225 J respectively. On applying breaks, car A stops after 1000 m and car B stops after 1500 m . If \(F _{ A }\) and \(F _{ B }\) are the forces applied by the breaks on cars A and B , respectively, then the ratio \(F _{ A } / F _{ B }\) is :NEET 2025 Easy
- The ratio of frequencies of fundamental harmonic produced by an open pipe to that of closed pipe having the same length isNEET 2023 Easy
More PYQs from NEET
- A copper wire of length \(10\,m\) and radius \(\left(10^{-2} / \sqrt{\pi}\right) m\) has electrical resistance of \(10 \,\Omega\). The current density in the wire for an electric field strength of \(10( V / m )\) is :NEET 2022 Medium
- Phloem in gymnosperms lacksNEET 2019 Medium
- The reaction of aqueous \(KMnO_4\) with \(H_2O_2\) in acidic conditions givesNEET 2014 Hard
- The following diagram showing restriction sites in \(E\). coli cloning vector pBR322. Find the role of ' \(X\) ' and ' \(Y\) genes:
NEET 2024 Medium - An inductor \(20\,\, mH,\) a capacitor \(100\, \mu F\) and a resistor \(50 \,\,\Omega\) are connected in series across a source of emf, \(V=10 sin 314 \,t .\) The power loss in the circuit is ......\(W\)NEET 2018 Hard
- The current passing through the battery in the given circuit, is :
NEET 2025 Easy