Physics The force of friction between two surfaces will increase if: Air gap is created between the two surfaces Irregularities on both the surfaces are removed The two surfaces are pressed harder A layer of lubricant is kept between the two surfaces Air gap is created between the two surfaces Irregularities on both the surfaces are removed The two surfaces are pressed harder A layer of lubricant is kept between the two surfaces ANSWER DOWNLOAD EXAMIANS APP
Physics Sound is heard over longer distances on rainy days because Moist air does not absorb sound Sound travels faster in moist air Sound travels slowly in moist air Moist air absorbs sound Moist air does not absorb sound Sound travels faster in moist air Sound travels slowly in moist air Moist air absorbs sound ANSWER DOWNLOAD EXAMIANS APP
Physics A doppler effect occurs when a source of sound moves Both A & B None of these Towards you Away from you Both A & B None of these Towards you Away from you ANSWER DOWNLOAD EXAMIANS APP
Physics Solar cells work on the principle of Photoelectric effect Photosynthesis Photovoltaic effect Photoconductive effect Photoelectric effect Photosynthesis Photovoltaic effect Photoconductive effect ANSWER DOWNLOAD EXAMIANS APP
Physics Who gave black hole theory? None of these Isaac Newton Albert Einstein Stephen Hawking None of these Isaac Newton Albert Einstein Stephen Hawking ANSWER DOWNLOAD EXAMIANS APP
Physics A star appears twinkling in the sky because of Reflection of light by atmosphere Scattering of light by atmosphere Diffraction of light by atmosphere Refraction of light by atmosphere Reflection of light by atmosphere Scattering of light by atmosphere Diffraction of light by atmosphere Refraction of light by atmosphere ANSWER DOWNLOAD EXAMIANS APP
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