Physics A convex mirror of focal length f (in air) is immersed in a liquid (u=4/3). The focal length of the mirror in the liquid will be : (7/3)f (3/4)f F (4/3)f (7/3)f (3/4)f F (4/3)f ANSWER DOWNLOAD EXAMIANS APP
Physics Point A is at a lower electrical potential than point B. An electron between them on the line joining them will Remain at rest Move towards A Move at right angles to the line joining A and B Move towards B Remain at rest Move towards A Move at right angles to the line joining A and B Move towards B ANSWER DOWNLOAD EXAMIANS APP
Physics On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because plastics have a lower density than metals metals have higher thermal capacity than plastics metals are good conductor of heat plastics have a higher thermal conductivity than metals plastics have a lower density than metals metals have higher thermal capacity than plastics metals are good conductor of heat plastics have a higher thermal conductivity than metals ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following options correctly explains the term heat budget? It is the balance between incoming and outgoing radiation It is the amount of heat which the surface of earth receives from the sun. It is a mode of transfer of heat through matter by molecular activity. It is the radiation from the earth in the form of long waves. It is the balance between incoming and outgoing radiation It is the amount of heat which the surface of earth receives from the sun. It is a mode of transfer of heat through matter by molecular activity. It is the radiation from the earth in the form of long waves. ANSWER DOWNLOAD EXAMIANS APP
Physics Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre? 4.33 diopters -12.33 diopters 12.33 diopters -4.33 diopters 4.33 diopters -12.33 diopters 12.33 diopters -4.33 diopters ANSWER DOWNLOAD EXAMIANS APP
Physics Stars twinkle because the intensity of light emitted by them changes with time. the refractive index of the different layers of the earth's atmosphere ch the distance of the stars from the earth changes with time. None of these the intensity of light emitted by them changes with time. the refractive index of the different layers of the earth's atmosphere ch the distance of the stars from the earth changes with time. None of these ANSWER DOWNLOAD EXAMIANS APP
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