Nuclei — Physics STD 12 Science — Question

Two identical parallel plate capacitors are connected in series to a battery of 100 V. A dielectric slab of dielectric constant 4.0 is inserted between the plates of second capacitor.  The potential difference across the capacitors will now be respectively(a) 50 V, 50 V(b) 80 V, 20 V(c) 20 V, 80 V(d) 75 V, 25 V

Which of the following particles will have minimum frequency of revolution when projected with the same velocity perpendicular to a magnetic field?

Assertion  :  The unpolarised light and polarised light can be distinguished from each other by using polaroid.
Reason      : A polaroid is capable of producing plane polarised beams of light.(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.

Fusion reaction is also known as ..........:

The value of angle of dip at the earth's magnetic pole is :

The direction of induced current in the loop abc is:

Statement-I : Energy is released when heavy nuclei undergo fission or light nuclei undergo fusion andStatement-II: For heavy nuclei, binding energy per nucleon increases with increasing Z. while for light nuclei it decreases with increasing Z.

The radio of deBroglie wavelengths of a proton and an alpha particle of same energy is:

Newton postulated his corpuscular theory of light on the basis of: