In a potentiometer circuit, a cell of EMF 1.5 V gives a balance point at 36 cm length of wire. If another cell of EMF 2.5 V replaces the first cell, then at what length of the wire, does the balance point occur?

In a potentiometer circuit, a cell of EMF 1.5 V gives a balance point at 36 cm length of wire. If another cell of EMF 2.5 V replaces the fi...

A charged particle having drift velocity of 7.5× 10^-4 m/s in an electric field of 3×10^-10V/m, has mobility in m^2 V^-1 s^-1

 [NEET-2020 ] a. 2.25×10^15      b. 25×10^6      c. 2.5×19^-6        d. 2.25 ×10^-15

A monoatomic gas at pressure P, having volume V expands isothermally to a volume 2V &then adiabatically to volume 16V. The final pressure of gas is ..( take gamma =5/3)

 [AIPMT 2014] a. 64 P        b. 32 P      c. P/64        d. 16 P  Solution:

A missile is fired for a maximum range with an initial velocity of 20 m/s, the range of a missile is

[NEET-2011] a. 40m      b. 50m     c. 60m    d. 20m    The range of a projectile can be given as

Two bodies of mass 4 kg and 6 kg are tied to the ends of a massless string. The string passes over a pulley which is frictionless. The acceleration of the system in terms of acceleration due to gravity (g) is :

  (a) g           (b) g/2           (c) g/5           (d) g/10

Dimensions of stress are

 [ NEET 2020 ]                                     

In Young’s double slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes :

 [NEET 2020] (a) double (b) half (c) four times (d) one-fourth