JEE Advanced 2015 Physics Questions

Showing 1–10 of 20 questions

Multi-correctmediumSimple Harmonic Motion
Two independent equal-mass harmonic oscillators have angular frequencies ω₁, ω₂ and total energies E₁, E₂. Their p–x ellipses are shown. If a/b = n² and a/R = n, choose the correct equation(s).
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MCQdifficultGeometrical optics
Two identical glass rods S₁ and S₂ (refractive index = 1.5) have one convex end of radius of curvature 10 cm. They are placed with the curved surfaces at a distance d as shown in the figure, with their axes (shown by the dashed line) aligned. When a point source of light P is placed inside rod S₁ on its axis at a distance of 50 cm from the curved face, the light rays emanating from it are found to be parallel to the axis inside S₂. The distance d is:
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MCQdifficultGeometrical optics
A monochromatic beam of light is incident at 60° on one face of an equilateral prism of refractive index n and emerges from the opposite face making an angle θ(n) with the normal. For n = √3, θ = 60° and dθ/dn = m. The value of m is:
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NumericmediumWave Motion
Four harmonic waves of equal frequency and equal intensity I₀ have phase angles 0, π/3, 2π/3 and π. Their resultant intensity is nI₀. Find n.
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NumericmediumGravitation
A fixed spherical mass M and two identical point masses m lie on the same straight line. The two point masses are connected by a rigid massless rod of length ℓ and can move along the line. When the nearer point mass is at r = 3ℓ from M, the rod tension is zero for m = K(M/288). Find K.
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NumericmediumUnit dimension and error
The energy is E(t)=A²exp(-αt), with α=0.2 s⁻¹. A has 1.25% error and time has 1.50% error. At t=5 s, find the percentage error in E.
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MCQmediumCurrent electricity
An aluminium bar of square cross-section contains a square iron insert as shown. The resistivities of Al and Fe are 2.7×10⁻⁸ Ωm and 1.0×10⁻⁷ Ωm respectively. Find the electrical resistance between faces P and Q.
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NumericmediumWave Optics
A Young's double-slit arrangement with slits S₁ and S₂ is immersed in water of refractive index 4/3 as shown. The maxima on the water surface satisfy x²=p²m²λ²-d², where λ is the wavelength in air, 2d is slit separation and m is an integer. Find p.
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NumericmediumElectrostatic
An infinitely long uniform line charge of linear charge density λ is parallel to the y-axis in the yz-plane at z = $\frac{\sqrt3}{2}a$ . If the magnitude of electric flux through the rectangular surface ABCD in the xy-plane, centred at the origin, is λL/(nε₀), find n.
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Multi-correctmediumMagnetic effect of current
A conductor (shown in the figure) carrying constant current I is kept in the x-y plane in a uniform magnetic field B⃗ . If F is the magnitude of the total magnetic force acting on the conductor, then the correct statement(s) is (are)
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JEE Advanced 2015 physics questions with solutions