Both neutrino (v) and anti neutrino (v) have almost _____ mass and are ____ particles.

For two particles A and B, curves are plotted sqrtV against de-Broglie wavelengths, where V is the potential on the particles. Which of the following relation is correct about the mass of particles?

A famous relation in physics relates ‘moving mass’ m to the ‘rest mass’ m_o of a particle in terms of its speed v and the speed of light, c. (This relation first arose as a consequence of special relativity due to Albert Einstein). A boy recalls the relation almost correctly but forgets where to put the constant c. He writes :- m=(m_0)/((1-v^2)^(1/2)) Guess where to put the missing c.

For the equation P prop m^(x).v^(y) where P is momentum, m is mass and v velocity. Then the value of x and y are

Find the of de-Broglie wavelengths associated with (i) protons, accelerated through a potential of 128 V, and (ii) alpha - particles accelerated through a potential difference of 64 V.

Escape velocity on a planet is v_e , if the radius of the planet remains same and mass becomes four times, the escape velocity becomes

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if assertion is true, but reason if false, (D) if both assertion and reason are false Assertion : An alternating voltage of 220V is more dangerous than a d.c. supply of 220 V. Reason : The peak value of 220V a.c. is about 311 V.

A particle of mass m and charge (-q) enters the region between the two charged plates initially moving along x-axis with speed v_x. The length of plate is L and an uniform electric field E is maintained between the plates. Show that the vertical deflection of the particle at the far edge of the plate is qEL^2//(2m v_x^2) .

Consider a rectangular block of wood moving with a velocity v_(0) in a gas at temperature T and mass density rho . Assume the velocity is along X-axis and area of cross section of the block perpendicular to v_(0) is A. Show that the drag force on the block is 4(rho) A v_(0) (sqrt(KT))/(m) , where m is the mass of the gas molecule.

A particles A with mass m_A is moving with velocity v and hits a particle B (mass m_B) at rest (one dimensional motion) find change in the de-Broglie wavelength of the particle A. Treat the collision as elastic.