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JEE Mains 2016 physics questions with solutions
Browse JEE Mains 2016 Physics questions with solutions. Useful for JEE, NEET, and school exam revision.
Showing 1–10 of 19 questions
- MCQmediumPhotoelectric effect and dual nature of matter
Radiation of wavelength λ is incident on a photocell and the fastest emitted electron has speed v. If the wavelength is changed to 3λ/4, how does the fastest-electron speed change?
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Open question & full solution → - MCQmediumWave Optics
A pinhole camera has length L and the pinhole has radius a. The spot on the opposite wall is assumed to have a spread equal to the sum of its geometrical spread and its diffraction spread. For incident wavelength λ, the spot has minimum size bₘᵢₙ when:
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Open question & full solution → - MCQmediumCurrent electricity
A galvanometer having a coil resistance of 100Ω gives a full scale deflection, when a current of 1 mA is passed through it. The value of the resistance, which can convert this galvanometer into ammeter giving a full scale deflection for a current of 10A, is :-
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Open question & full solution → - MCQmediumMagnetic effect of current
Two identical wires A and B, each of length ℓ, carry the same current I. Wire A is bent into a circle of radius R and wire B into a square of side a. If Bₐ and Bᵦ are the magnetic fields at the centres of the circle and square respectively, find Bₐ/Bᵦ.
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Open question & full solution → - MCQmediumSimple Harmonic Motion
A particle performs simple harmonic motion with amplitude A. Its speed is trippled at the instant that it is at distance 2A/3 from equilibrium position. The new amplitude of the motion is.
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Open question & full solution → - MCQmediumNuclear physics
Half-lives of two radioactive elements A and B are 20 minutes and 40 minutes, respectively. Initially, the samples have equal number of nuclei. After 80 minutes, the ratio of decayed numbers of A and B nuclei will be :-
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Open question & full solution → - MCQmediumAC Circuits
An arc lamp requires a direct current of 10A at 80V to function. If it is connected to a 220V (rms), 50Hz AC supply, the series inductor needed for it to work is close to:
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Open question & full solution → - MCQmediumCapacitor
Three capacitors each of 4 µF are to be connected in such a way that the effective capacitance is 6 µF. This can be done by connecting them :
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Open question & full solution → - MCQmediumThermodynamics
'n' moles of an ideal gas undergoes a process A → B as shown in the figure. The maximum temperature of the gas during the process will be :
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Open question & full solution → - MCQmediumUnit dimension and error
A screw gauge with a pitch of 0.5 mm and a circular scale with 50 divisions is used to measure the thickness of a thin sheet of Aluminium. Before starting the measurement, it is found that when the two jaws of the screw gauge are brought in contact, the 45th division coincides with the main scale line and that the zero of the main scale is barely visible. What is the thickness of the sheet if the main scale reading is 0.5 mm and the 25th division coincides with the main scale line?
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