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1.
Chadwick was awarded the 1935 Nobel prize in physics for his discovery of the
2.
The process of superimposing signal frequency (i.e., audio wave) on the carrier wave is known as
3.
Electromagnetic radiations are emitted by which of the following?
4.
If an a-particle is projected normally through a uniform magnetic field, then the path of the a-particle inside the field will be
5.
Which one of the following is correct?
The wavelength of the X-rays
The wavelength of the X-rays
6.
Light Emitting Diode (LED) converts
7.
Television signal cannot be received generally beyond a particular distance due to
8.
Sun emits energy in the form of electromagnetic radiation. The following help in the generation of solar energy. Arrange them in the right sequence beginning from the starting of the cycle:
1. Hydrogen is converted to helium at very high temperatures and pressures.
2. The energy finds its way to sun's surface.
3. A vast quantity of energy is generated by nuclear fusion.
Select the correct answer using the code given below.
1. Hydrogen is converted to helium at very high temperatures and pressures.
2. The energy finds its way to sun's surface.
3. A vast quantity of energy is generated by nuclear fusion.
Select the correct answer using the code given below.
9.
Consider the following statements:
At the present level of technology available in India, solar energy can be conveniently used to:
1. Supply hot water to residential buildings.
2. Supply water for minor irrigation projects.
3. Provide street lighting.
4. Electrify a cluster of villages and small towns.
At the present level of technology available in India, solar energy can be conveniently used to:
1. Supply hot water to residential buildings.
2. Supply water for minor irrigation projects.
3. Provide street lighting.
4. Electrify a cluster of villages and small towns.
10.
The neutron, proton, electron and alpha particle are moving with equal kinetic energies. How can the particles be arranged in the increasing order of their velocities?