Recently Active Physics Questions

if the source of e.m.f. and the ammeter were physically interchanged in a network the ammeter will show the same current here in the solution they have applied principal of Reciprocity of e.m.f. Please explain it ...

What is the time period of a simple pendulum of infinite length ? pls show in details and explanation . ...

are we supposed to do the topic of earth's magnetism and magnetic material ................ as it is not mentioned in IIT syllabus ...

Pressure varies directly with volume as such Ti=Tf.Plot P-V graph..... ...

1) Acubical block of wax is uniformly heated from all sides. Melting will start from a)top b)bottom c)sides d)uniformly ...

three rods of identical cross sectional area and made of the same metal form the sides of an isosceles triangle ABC . right angled at B . The points A and B are maintained at temperatures T and 2 T respectively . in the stead ...

Q1. A point moves in a plane so that its angular velocity about two fixed points is the same in the plane. The point describes: (a) circle (b) straight line (c) ellipse (d) parabola Q2. St 1: If the law of gravitation becomes ...

two air bubbles in water a]attract each other b]repel each other c]do not exert any force on each other d]may attract or may repel depending on the distance between them please try to explain solution fully please [176] ...

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a current passses through an ohmic conductor of non uniform cross section .which are independent of cross section (a)charge crossing in a given time interval (b)drift speed (c)current density (d)free electron density ...

IIT - Physics Half - life of a radioactive subst. A is 4 days. The probability that a nucleus will decay in 2 half-lives?? ...

*Image* solve Question no. 3... The spring attached to d vertex B has spring constant = K1 and the other one has K2 ... also, in all d four options, K2 follows K1... ...

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a convex lens of focal length 25cms was cut along the diameter into two identical halves and then was again set leaving a thin gap of width a= 0.1cm as shown. A narrow slit emtting monochromatic light of λ = 0.6μm was place ...

consider the infinite ladder such that r1 is in horizontal direction in upper side only n r2 in vertical direction .the voltage is halved after every section .comment on r1/r2 ...

two equal masses are situated at separation r0. One of them is imparted initial velocity v0 = (Gm/r0)^1/2 Treating motion only under mutual graviation, find the ration of max and min separation between the masses *Image* ...

what amount of heat is generated in a coil of resistance r due to chaarge q passing through it if the current in coil decreases to 0 uniformly during a time interval Δt ...

a wire of length l and 3 identical cells of negligible internal resistances are connected in series .due to the current the temp of wire is raised by Δτ in time t .N number of similar cells is now connected in series with a ...

hi friends...i knw u ppl are busy....but sum1 pl explain da scenario wen charge conservation comes into picture....ie kinda ... weak in electrostat...pl explain using 1 example...the conservation of charges in shells and conc ...

which of the following quantities do not change when an ohmic resistor cnnected to battery is heated due to current (a)drift speed (b)resistivity (c)resistance (d)no of free electrons ...

wat is the basic concept of max power generation and relation b/w r shunt n r load ...

a spaceship orbits the earth at a constant speed along a circular path. when an astronaut inside the spaceship releases an object, it does not move away from him. which of the following is the most accurate reason for this? a ...

A uniform rod of length L,cross-section area A and Young's modulus Y is acted upon by the forces as shown in the figure. *Image* The elongation in the rod is λ (FL/AY). The value of λ is : (A) 4 (B) 3 (C) 11/4 (D) 4/3 ...

*Image* 14 was easy but how to do questions 15 and 16?, ...

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for a certain metal the K absorption edge is at 0.172 x 10-10m please explain what does this mean also we are given Ka wavelength How to calculate EK i.e. energy of K orbit ...

photons emmited during transitions between corresponding pairs of levels in He+ and H have the same energy E and same wavelength = hc ------ E tell whether this statement is correct or not If correct , why ...

please check the ques related to fusion and fission they have given ans as (b) & (d) won't it be (b) &(c) please correct me ...

Three identical rings move with the same speed on a horizontal surface in a uniform horizontal mag. field normal to the plane of the rings. The first (A) slips without rolling , the second (B) rolls without slipping , & the t ...

two thin parallel slits are made in an opaque sheet of film when a monochromatic beam of light is shone through them at normal incidence , the first bright fringes in the transmitted light occur at 45° (both sides of central ...