Physics Friction is caused by the ________ on the two surfaces in contact. Smoothness Irregularities Gaps Densities Smoothness Irregularities Gaps Densities ANSWER DOWNLOAD EXAMIANS APP
Physics To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor Should be in the form of a vertical rod Can be of any shape Should be made of a good conductor but can be of any shape Should be made of a good conductor like copper with sharp-pointed edges Should be in the form of a vertical rod Can be of any shape Should be made of a good conductor but can be of any shape Should be made of a good conductor like copper with sharp-pointed edges ANSWER DOWNLOAD EXAMIANS APP
Physics Energy in reflected light : Decreases with the increase in angle of incidence Increases with the increase in angle Does not depends on the angle of incidence Becomes maximum for angle of incidence equal to 45° Decreases with the increase in angle of incidence Increases with the increase in angle Does not depends on the angle of incidence Becomes maximum for angle of incidence equal to 45° ANSWER DOWNLOAD EXAMIANS APP
Physics The velocity of sound in moist air is more than in dry air because the moist air has More pressure than dry air. Less density than dry air. More density than dry air. Less pressure than dry air. More pressure than dry air. Less density than dry air. More density than dry air. Less pressure than dry air. ANSWER DOWNLOAD EXAMIANS APP
Physics If a carrier wave of 1000 kHz is used to carry the signal, the length of transmitting antenna will be equal to ________. 3 m 0.3 m 30 m 300 m 3 m 0.3 m 30 m 300 m ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following experiments analyzed the Fraunhofer lines of the solar spectrum? Bunsen and Kirchhoff's experiment Geiger and Marsdens experiment on scattering of alpha particles Lamb-Rutherford experiment Barkla's experiment on scattering of X-rays Bunsen and Kirchhoff's experiment Geiger and Marsdens experiment on scattering of alpha particles Lamb-Rutherford experiment Barkla's experiment on scattering of X-rays ANSWER DOWNLOAD EXAMIANS APP
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