Choose the incorrect statements from the following:
(A) The energy density of an electric field in electromagnetic waves is \( (\epsilon_0 E^2/2) \).
(B) The total energy of electromagnetic waves falling on a surface is \( E = 6.0 \times 10^5 \text{ J} \) and the momentum delivered to the surface, if absorbed fully, is \( p = 2 \times 10^3 \text{ kg m/s} \).
(C) The speed of the electromagnetic waves is \( E_0 / B_0 \).
(D) The energy density of magnetic field in electromagnetic Waves is \( (B^2 / \mu) \).
Choose the correct answer from the options given below:

The capacitance of a capacitor is \( 4 \mu\text{F} \) and it's potential is 100 V. The energy released on discharging it fully will be

Photoelectric effect reveals the :

If the temperature of a metallic conductor is increased, then the product of resistivity and conductivity

X-rays of wavelength \( = 1\text{\AA} \) have frequency

A cell of emf 10 V and the internal resistance 1 \( \Omega \) is being charged by an external supply of 100 V. An external resistance of 8 \( \Omega \) is connected to the charging circuit. The current in the circuit is

A thin prism of refractive index 1.5 when placed in air deviates a light ray by a minimum angle of \( 5^{\circ} \). The angle of minimum deviation when it is immersed in oil of refractive index 1.25 is:

Positively charged particles are projected into a magnetic field. If the direction of magnetic field is along the direction of motion of the charged particles, the particles will experience

A charge q is enclosed by a Gaussian spherical surface of radius R. If the radius is reduced to half of R, the outward electric flux will be

Arrange the following amines in order of their increasing basic strength:

Experimentally determined molar mass is always lower than the true value in case of:

Genetically modified organisms have been useful in many ways. Which one
of the following statements is not correct in the case of GMO plants?

Read the given passage carefully and answer the questions
Salmonella typhi is a pathogenic bacterium which causes typhoid fever in human beings. Sustained high fever (39° to 40°C), weakness, stomach pain, constipation, headache and loss of appetite are some of the common symptoms of this disease. Typhoid fever could be confirmed by Widal test. Plasmodium enters the human body as sporozoites. The parasites initially multiply within the liver cells and then attack the red blood cells (RBCs) resulting in their rupture. The rupture of RBCs is associated with release of a toxic substance, haemozoin, which is responsible for the chill and high fever recurring every three to four days. There is lymphoid tissue also located within the lining of the major tracts (respiratory, digestive and urogenital tracts) called mucosa-associated lymphoid tissue (MALT). In our body, cell growth and differentiation is highly controlled and regulated. In cancer cells, there is breakdown of regulatory mechanisms. Normal cells show a property called contact inhibition by virtue of which contact with other cells inhibits their uncontrolled growth. Cancerous cells just continue to divide giving rise to masses of cells called tumors. Tumors are of two types: benign and malignant. Cannabinoids are a group of chemicals, which interact with cannabinoid receptors present principally in the brain. Generally taken by inhalation and oral ingestion, these are known for their effects on cardiovascular system of the body.
In which organ of the human body, cannabinoid receptors are principally present?