Recently Active Disucss Test Question Questions

Option A should have been MR2/2 Match the following for 51-54 The disc is of Radius R. The mass of the red part is M. Match the moment of inertia of red part about the centre of circle and perpendicular to the plane 51) *Imag ...

The current I is ...

The magnetic force on the arm RS is ...

Comprehension for 48-50 *Image* A rectangular loop PQRS made from a uniform wire has length a, width b and mass m. It is free to rotate about the arm PQ, which remains hinged along a horizontal line taken as the y-axis. A uni ...

A negative charge on the surface of the circle tends to move ...

A particle of charge +q and mass m starts from rest at the centre of the circle. The speed of the particle when it crosses the circle is ...

Comprehension for 44-46 Two fixed charges -2Q and Q are located at the points with coordinates (-3,0) and (3,0) respectively in the x-y plane. The locus of points in the plane where electric potential is zero is a circle with ...

efficiency of the cycle is ...

Heat input to the cycle is ...

Comprehension for 41-43 The Diesel cycle is the thermodynamic cycle which approximates the pressure and volume of the combustion chamber of the Diesel engine, invented by Rudolph Diesel in 1897.The process A→B is an adiabat ...

F= ...

f1= ...

Comprehension for 45-47 *Image* In the figure masses m1, m2, and M are 20 kg, 5 kg and 50 kg respectively. The coefficient of friction between M and ground is zero. The coefficient of friction between m1 and M and that betwee ...

The magnitude of the velocity of the body 2 at the instant body 1 stops is ...

The Distance between the bodies when the body 1 stops is ...

Comprehension for 38-40 Any body thrown at some angle on the earth surface follows a parabolic path. The motion of the body is given as y=xtanθ0-gx2/2(v0cosθ0)2 where θ0 is the angle of projection and v0 is the velocit ...

STATEMENT-I: Increasing the amplitude of the SHM by two times, the maximum acceleration gets doubled. STATEMENT-II: Increasing the amplitude of the SHM by two times, the maximum total energy gets doubled. ...

In the ideal double slit experiment, when a glass-plate(μ=1.5) of thickness 2λ is introduced in the path of one of the interfering beams (wavelength λ), STATEMENT-I: The intensity at the position where the central maxi ...

A beam of white light is incident on glass air interface from glass to air such that green light just suffers total internal reflection. STATEMENT-I: Yellow, Orange, Red will come out to air STATEMENT-II: wavelengths of yello ...

*Image* An infinite current carrying wire passes through point O and is perpendicular to the plane containing a current carrying loop ABCD as shown in figure. STATEMENT-I: Net force on the loop is zero STATEMENT-II: As seen f ...

Two bulbs of 25W and 100W rated at 220 volts are connected in series across a 440 volts supply. STATEMENT-I: 25 watt bulb will fuse STATEMENT-II: Voltage across 25W bulb is greater than the voltage across 100W bulb ...

A dielectric slab of thickness d is inserted in a parallel plate capacitor whose negative plate is at x=0 and positive plate is at x=3d. The slab is equidistant from the plates. The capacitor is given some charge. STA ...

Reasoning Type An ideal black body at room temperature is thrown into a furnace. It is observed that STATEMENT-I: it is the darkest body at all times STATEMENT-II: black body absorbs all heat at highest rate ...

Reasoning Type A cubical block is floating inside a bath. The temperature of system is increased by small temperature ΔT. STATEMENT-I: It was found that the depth of submerged portion of cube does not change. STATEMENT-II: c ...

*Image* A point source S is placed midway between two converging mirrors having equal focal length f as shown in figure. For what d, only one image is formed ...

*Image* A conducting loop is puled with constant velocity towards a region of uniform magnetic field of induction B inward to the plane as shown in the figure. Then the current involved in the loop (d>r) ...

*Image* Two blocks A and B of mass m are connected by a massless spring of natural length L and spring constant K. The blocks are initially resting on a smooth horizontal floor with the spring at its natural length, as shown ...

Multiple Correct Answers Follows *Image* A man pushes a solid cylinder of mass m1=20 kg wtih the help of a plank of mass m2=5 kg as shown in figure. There is no slipping at any contact. The horizontal component of the ...

If a star converts all of its Helium into oxygen nucleus, the amount of energy released per nucleus of oxygen is (He=4.0026 amu, O=15.9994 amu) ...

An α particle and a proton are subjected to the same magnetic field B. B is perpendicular to the velocity vectors of the particles. The radii of their paths are equal to each other. The ratio of their de-Broglie wavelength i ...