A closed cubical box is completely filled with water and is accelerated horizontally towards
right with constant acceleration a. The resultant normal force by the water on the top of the box

Assertion : The nature of X-ray spectrum is continuous.
Reason : X-rays arise due to jumps of electrons from higher orbit to one of the inner orbit in an atom.
A. Both, Assertion and Reason are true and the Reason is correct explanation of the Assertion.
B. Both, Assertion and Reason are true but the Reason is not correct explanation of the Assertion.
C. Assertion is true but the Reason is false.
D. Both, Assertion and Reason are false.

The moment of inertia of a sphere of mass M and radius R about an axis passing through its
centre is $\\dfrac{2}{5} MR^2$. The radius of gyration of the sphere about a parallel axis to the above and tangent to the sphere is:

A gas mixture consists of 2 moles of O2 and 4 moles of Ar at temperature T. Neglecting all
vibrational modes, the total internal energy of the system is

A body of mass 6 kg is acted upon by a force which causes a displacement in it given
by x=$\\dfrac{t^2}{2}$ metre, where t is the time in second. The work done by the force in 2 seconds is

Two rods of same length and area of cross-section and Young s moduli Y, and Y2 are joined
end to end. The equivalent Young s modulus for the composite rod is

If a person can throw a stone to maximum height of h metre vertically, then the
maximum distance through which it can be thrown horizontally by the same person is

A thin copper wire of length l increases in length by 1%, when heated from 0°C to 100°C. If
a thin copper plate of area (2 l * l) is heated from 0°C to 100°C, the percentage increase in its are would be

3 mole of hydrogen is mixed with 1 mole of neon.
The molar specific heat at constant pressure is

3. Two conducting rings P and Q of radii r and 2r moving uniformly in opposite directions with
centre of mass velocities 2v and v respectively on a conducting surface S. There is a uniform field of magnitude B perpendicular to the plane of the rings.
The potential difference between the highest points of the two rings is