Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

If the frequency of an alternating e.m.f. is f in L-C-R circuit, then the value of impedance Z as log(frequency) increases:

In Maxwell's velocity distribution curve area under the graph:

________  represents the most significant digits of the resistance value in finding the  resistance of carbon resistor.

Consider the following two statements
A. Energy spectrum of a-particles emitted in radioactive decay is discrete
B. Energy spectrum of b-particles emitted in radioactive decay is continuous(a) Only A is correct(b) Only B is correct(c) A is correct but B is wrong(d) Both A and B are correct

If refractive index of red, violet and yellow lights are 1.42, 1.62 and 1.50 respectively for a medium. Its dispersive power will be(a) 0.4(b) 0.3(c) 0.2(d) 0.1

Assertion  :   The presence of water molecules makes separation of ions easier in electrolyte.  
Reason    : The presence of water molecules in electrolyte decreases the resistance of electrolyte.(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.(c) If assertion is true but reason is false.(d) If the assertion and reason both are false.

The ozone layer in the atmosphere absorbs:

The magnetic moment of a current (l) carrying circular coil of radius (r) and number of turns (n) varies as

A very long bar magnet is placed with its north pole coinciding with the centre of a circular loop carrying as electric current i. The magnetic field due to the magnet at a point on the periphery of the wire is B. The radius of the loop is a. The force on the wire is: