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JEE Mains physics questions with solutions
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- MCQmediumWave Motion
A 100 Hz source moves toward a wall at 20 m s⁻¹. O₁ and O₂ are stationary observers. Let f₁ and f₂ be the beat frequencies heard by O₁ and O₂ between the direct sound and the sound reflected from the wall. Take sound speed = 330 m s⁻¹. Which statement is correct?
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JEE MainsAdvanced
Open question & full solution → - MCQmediumMathematical tools and vector
A vector has magnitude 15 and is directed along the unit vector (3/5)î + (4/5)ĵ. Which vector represents it?
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NEETJEE Mains
Open question & full solution → - MCQmediumNewtons law of motion and Friction
A 10 kg mass is suspended by a 4 m rope from the ceiling. A horizontal force F is applied at the midpoint so that the upper half of the rope makes 45° with the vertical while the mass remains at rest. Take g=10 m s⁻². F is:
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JEE Mains
Open question & full solution → - MCQmediumWave Motion
Two organ pipes, each closed at one end, gives 5 beats per s, when emitting their fundamental notes. If their lengths are in the ratio of 50: 51, their fundamental frequencies (in Hz) are
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JEE MainsAdvanced
Open question & full solution → - NumericmediumWave Motion
Sound with intensity larger than 120dB appears painful to a person. A small speaker delivers 2.0 W of audio output. How close can the person get to the speaker without hurting his ears?
JEE MainsAdvanced
Open question & full solution → - MCQmediumMathematical tools and vector
A line passes through (4, 3) and cuts equal positive intercepts on the coordinate axes. Find its equation.
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NEETJEE Mains
Open question & full solution → - MCQmediumSimple Harmonic Motion
The angular frequency of motion whose equation is 4(d²y/dt²) + 9y = 0 is (y = displacement and t = time).
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JEE MainsAdvanced
Open question & full solution → - MatchmediumGeometrical optics
An equi-convex lens of refractive index μ₂ and focal length f (in air) is kept in medium of refractive index μ₁. Match Column-A with Column-B.
List 1
(P) If lens is cut in two equal parts by plane yy′ (μ₁ = 1)
(Q) If lens is cut in two equal parts by plane xx′ (μ₁ = 1)
(R) If μ₁ = μ₂
(S) If μ₁>μ₂
List 2
(1) Lens will act as a glass slab
(2) Lens will be converging and focal length will change
(3) Lens will be converging and focal length will remain same
(4) Lens will be diverging and focal length will change
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JEE MainsJEE Advanced
Open question & full solution → - MCQmediumGeometrical optics
A prism has A=60°. At miniμm deviation i=50°. The miniμm deviation is:
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JEE MainsNEET
Open question & full solution → - NumericmediumGravitation
A comet is in elliptical orbit around the sun. In this orbit the comet's smallest distance from the sun is 72 × 10⁶ m and its largest distance from the sun is 144 × 10⁶ m. The ratio of comet's maximum speed to the minimum speed in the orbit is : (Neglect the presence of all bodies other than the sun and comet).
JEE MainsAdvanced
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