Question
What type of chemical bond is present in MgCl2? How are the chemical bonds formed in MgCl2?
What type of chemical bond is present in MgCl2? How are the chemical bonds formed in MgCl2? (Atomic number of Mg and…
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The first three elements of group 16 of long periodic table are O, S, and Se. Arrange them in the order of decreasing atomic radius, increasing electro-negativity and decreasing ionization energy.
The first three elements of group 16 of long periodic table are O, S, and Se. Arrange them in the order of…
Question
State Ohm’s law. If a potential difference of 10 V is applied between the two ends of a conductor, an electric current of 0.1 A flows. Determine the resistance of the conductor.
State Ohm’s law. If a potential difference of 10 V is applied between the two ends of a conductor, an electric current…
Question
Which energy is transformed to which energy in an electric motor? Why in domestic circuits, electric bulbs, electric fans, refrigerators etc., are connected in parallel combination ?
Which energy is transformed to which energy in an electric motor? Why in domestic circuits, electric bulbs, electric fans, refrigerators etc., are…
Question
If two electric bulbs of ratings ‘240V-60 W’ and ‘240V-100W’ are connected in series, which one will shine brighter? (Filaments of both the bulbs are of the same material)
If two electric bulbs of ratings ‘240V-60 W’ and ‘240V-100W’ are connected in series, which one will shine brighter? (Filaments of both…
Question
What is long-sightedness? What type of lens is used to remedy this defect?
What is long-sightedness? What type of lens is used to remedy this defect? [2+1]
Question
Draw refracted rays for the incident rays which are parallel to the principal axis of a convex lens. Mark focus (F)
Draw refracted rays for the incident rays which are parallel to the principal axis of a convex lens. Mark focus (F). [3]…
Question
A light is incident from air medium on another medium. If the refractive index of this medium is 1.5 and the wavelength of light in this medium is 4000 Å what is the wavelength of light in the air medium ? What is the velocity of the light in this medium?
A light is incident from air medium on another medium. If the refractive index of this medium is 1.5 and the wavelength…
Question
By the reaction of aluminium with 40 grams of metallic oxide and high temperature, 28 grams of the metal and 25.5 grams of aluminium oxide are produced
By the reaction of aluminium with 40 grams of metallic oxide and high temperature, 28 grams of the metal and 25.5 grams…
Question
Establish the combined form of Boyle’s law and Charles’ law.
Establish the combined form of Boyle’s law and Charles’ law.