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JEE Mains 2014 physics questions with solutions
Browse JEE Mains 2014 Physics questions with solutions. Useful for JEE, NEET, and school exam revision.
Showing 1–10 of 21 questions
- MCQmediumNewtons law of motion and Friction
A block of mass m is placed on a surface whose vertical cross-section is y = x³/6. If the coefficient of friction is 0.5, the maximum height above the ground at which the block can be placed without slipping is:
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JEE Mains 2014
Open question & full solution → - MCQmediumSimple Harmonic Motion
For a simple pendulum, a graph is plotted between its kinetic energy (KE) and potential energy (PE) against its displacement d. Which one of the following represents these correctly? (graphs are schematic and not drawn to scale)
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JEE Mains 2014
Open question & full solution → - MCQmediumAtomic Structure and X-rays
Hydrogen ¹₁H, deuterium ²₁H, He⁺ and Li²⁺ each have one electron. For the transition n = 2→1, let the emitted wavelengths be λ₁, λ₂, λ₃ and λ₄, respectively. Which relation is correct?
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JEE Mains 2014
Open question & full solution → - MCQmediumUnit dimension and error
A student measured the length of a rod and wrote it as 3.50 cm. Which instrument did he use to measure it?
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JEE Mains 2014
Open question & full solution → - MCQmediumGeometrical optics
A thin convex lens made from crown glass (μ = 3/2) has focal length f. When measured in two different liquids of refractive indices 4/3 and 5/3, it has focal lengths f₁ and f₂ respectively. The correct relation between the focal lengths is:
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JEE Mains 2014
Open question & full solution → - MCQmediumUnit dimension and error
The diode current-voltage relation is I = [exp(1000 V/T) - 1] mA, with V in volts and T in kelvin. At T=300 K the measured current is 5 mA. If V has an uncertainty ±0.01 V, find the resulting current uncertainty.
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JEE Mains 2014
Open question & full solution → - MCQmediumSimple Harmonic Motion
A particle moves with simple harmonic motion in a straight line. In first τ s, after starting from rest it travels a distance a, and in next τ s it travels 2a, in same direction, then :
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JEE Mains 2014
Open question & full solution → - MCQmediumAC Circuits
In the shown circuit, point C is kept connected to A until the current becomes steady. At t=0, C is suddenly disconnected from A and connected to B. Find the ratio of the voltage across R to the voltage across L at t=L/R.
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JEE Mains 2014
Open question & full solution → - MCQmediumWave Motion
A pipe of length 85 cm is closed from one end. Find the number of possible natural oscillations of air column in the pipe whose frequencies lie below 1250 Hz. The velocity of sound in air is 340 m s⁻¹.
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JEE Mains 2014
Open question & full solution → - MCQmediumThermodynamics
Three rods of Copper, Brass and Steel are welded together to form a Y-shaped structure. Area of cross-section of each rod = 4 cm². End of copper rod is maintained at 100°C where as ends of brass and steel are kept at 0°C. Lengths of the copper, brass and steel rods are 46, 13 and 12 cms respectively. The rods are thermally insulated from surroundings except at ends. Thermal conductivities of copper, brass and steel are 0.92, 0.26 and 0.12 CGS units respectively. Rate of heat flow through copper rod is :
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JEE Mains 2014
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