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Recent questions in Physics

by JeeNeetQnA in Magnetic Effects of Current and Magnetism asked Apr 13 11 views

Current I is flowing in a coil and two points B1 and B2 are on the axis of coil at a distance 0.05 m and 0.2 meter

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by JeeNeetQnA in Physics and Measurement asked Apr 13 5 views

A screw gauge shows 8 division on circular scale below reference line when no object is placed. Number of division on

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by JeeNeetQnA in Gravitation asked Apr 13 7 views

A sphere of mass M has gravitational field at point P is g1. Now volume cavity of radius R is removed as shown.

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by momin in Electronic Devices asked Apr 10 15 views

For an extrinsic semiconductor if doping concentration is increases then.

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by JeeNeetQnA in Kinematics asked Apr 7 14 views

A train passes by a pole with uniform acceleration ‘a’. Its front end when passes by it has speed ‘u’ and its back end

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by JeeNeetQnA in Gravitation asked Apr 7 12 views

Time period of simple pendulum at a planet is 2 sec. Length of simple pendulum is 2 meter. Find the value of g

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by JeeNeetQnA in Rotational Motion asked Apr 7 9 views

Two particles having mass M1 = 4 gm, M2 = 16 gm. If kinetic energy of both the particle is equal then ratio of their

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by JeeNeetQnA in Dual Nature of Matter and Radiation asked Apr 7 27 views

In photoelectric effect of a certain metal the stopping potential is 0.71 V if the wavelength of incident radiation is

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by JeeNeetQnA in Physics asked Apr 7 7 views

If an electron of a hydrogen atom jumps from n = 2 to n = 1 then find the wavelength of released photon.

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by JeeNeetQnA in Kinetic Theory of Gases asked Apr 7 12 views

Statement-1: Rotational KE of a gas molecule follows Maxwell's speed distribution curve. Statement-2: Rotational KE

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1 answer

by AJINK Gupta in Electromagnetic Waves asked Apr 4 23 views

If the current flowing in a coil is reduced to half of its original value, the relaticn between the new energy

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by JeeNeetQnA in Electromagnetic Induction and Alternating Currents asked Apr 1 12 views

In a given AC series circuit containing elements R, L and C & source voltage = 220v, it is known that if L alone is

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by JeeNeetQnA in Oscillations and Waves asked Apr 1 7 views

A unit mass particle is moving in a circle of radius R such that its projection on diameter executes SHM.

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by JeeNeetQnA in Rotational Motion asked Apr 1 6 views

A solid sphere as shown is rolling without slipping. Find maximum length travelled on an inclined plane?

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by Rumit in Oscillations and Waves asked Mar 22 28 views

simple mechanics

Consider a mass-spring system where a 4 kg mass is attached to a massless spring of constant k 196 N/m; the system is set to oscillate on a frictionless, horizontal table. The mass is pulled 25 cm away from the equilibrium position and then released. (2 ...

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by JeeNeetQnA in Physics and Measurement asked Mar 20 17 views

Find out dimension of 1/4πε0 e2/hc where e : electronic charge, ε0 = permittivity of free space, h : plank constant

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by JeeNeetQnA in Dual Nature of Matter and Radiation asked Mar 20 23 views

Proton and electron are moving along circular path with same speed. Find out ratio of debroglie wavelength that is λe/λp

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by JeeNeetQnA in Wave Optics asked Mar 20 19 views

Sun light is diffracted through a circular aperture of diameter 0.1μm. If diameter is slightly increased then

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by JeeNeetQnA in Communication Systems asked Mar 20 23 views

In an amplitude modulated wave, message wave frequency fm and carrier wave frequency fc. Find out wavelength

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by JeeNeetQnA in Electromagnetic Induction and Alternating Currents asked Mar 1 30 views

In AC series R-L-C resonance circuit Resistance R = 6.28 ohm, frequency 10 MHZ and self inductance L = 2 × 10–4 Henry

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by JeeNeetQnA in Communication Systems asked Mar 1 28 views

Vm = 20sin[100πt+π/4], Vc = 80sin[104t+π/6], For amplitude modulation wave find out percentage modulation index.

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by JeeNeetQnA in Electromagnetic Waves asked Mar 1 15 views

An electromagnetic wave is propagating in medium, where μr = εr = 2. If speed of light in medium is x × 10^7 m/s.

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by JeeNeetQnA in Gravitation asked Mar 1 9 views

Two planet are resolving about planet with T1/T2 = 1/8. Find the ratio of the angular speed ω1/ω2

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by JeeNeetQnA in Properties of Solids and Liquids asked Mar 1 45 views

A 100 kg block can be lift by placing a mass m on a piston (hydraulic lift). If diameter of piston placed at one

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by JeeNeetQnA in Physics asked Mar 1 12 views

i = 20t + 8t^2, Find charge flown during 0 ≤ t ≤ 15

i = 20t + 8t2 Find charge flown during $0 \leq t \leq 15$ Numerical Value Type

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by JeeNeetQnA in Laws of Motion asked Mar 1 13 views

A vertical cross-section of plane is y=x^2/4, coefficient of friction is 0.5. Find maximum height at which particle can

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by JeeNeetQnA in Electromagnetic Induction and Alternating Currents asked Mar 1 9 views

A 220 volts AC supply is given to the primary circuit of transformer and as output of 12 volts DC is taken out using

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