REPEATER 2024 — Physics STD 12 Science — Question

Define potential gradient of the potentiometer wire.

State law of length.

Why don’t heavy nuclei decay by emitting a single proton or a single neutron?

State the mathematical relation between a number of turns in the primary coil to a secondary coil in the step-up transformer.

Why two light sources must be of equal intensity to obtain a well-defined interference pattern?

For the point P in above, we had to extend OC to Q to meet the perpendicular PQ. What will happen to the expression for I if the point P lies on OC?

Are good absorbers also good emitters ?

Is it always necessary of use red light to get photocelectric effect?

Write the mathematical formula for Bohr magneton for an electron revolving in nth orbital.

During ice ballet, while in the outer rounds, why do the dancers outstretch their arms and legs.