Nuclei — Physics STD 12 Science — Question

If the frequency of light in a photoelectric experiment is doubled, the stopping potential will:

______ of a two particle system depends only on the separation between the two particles. The most appropriate choice for the blank space in the above sentence is:

1. Kinetic energy.
2. Total mechanical energy.
3. Potential energy.
4. Total energy.

In a RLC circuit capacitance is changed from C to 2C. For the resonant frequency to remain unchanged, the inductance should be changed from L to.

Which of the following contains a covalent bond?

The magnitude of the electric field due to a point charge at a distance of 4.0 m is 9 N/C. Distance of this point charged substance due to electric field of magnitude 16 N/C will be:

The phenomenon by which stars recedes from each other is explained by:

50 Ω and 100 Ω  resistors are connected in series. This connection is connected with a battery of 2.4 volts. When a voltmeter of 100 Ω  resistance is connected across 100 Ω  resistor, then the reading of the voltmeter will be(a) 1.6 V (b) 1.0 V(c) 1.2 V  (d) 2.0 V

A point charge is kept at the centre of a metallic insulated spherical shell. Then (a) Electric field out side the sphere is zero(b) Electric field inside the sphere is zero(c) Net induced charge on the sphere is zero(d) Electric potential inside the sphere is zero