Physics A tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an initial speed of 110 feet per second. After how many seconds does the ball attain its maximum height? 5.41 sec 2.87 sec 4.65 sec 3.44 sec 5.41 sec 2.87 sec 4.65 sec 3.44 sec ANSWER DOWNLOAD EXAMIANS APP
Physics The speed of light in air is Infinity 3 × 10–8 m/s 8 × 103 m/s 3 × 108 m/s Infinity 3 × 10–8 m/s 8 × 103 m/s 3 × 108 m/s ANSWER DOWNLOAD EXAMIANS APP
Physics A photon of X-ray has energy of 1 keV. A photon of visible radiation has energy of 3 eV. In this context, which one of the following statements is not correct? The speeds of both the photons in vacuum are different The frequency of X-ray photon is higher than the frequency of visible radiation photon. Both the photons have different energies. The wavelength of X-ray photon is less than the wavelength of visible radiation photon. The speeds of both the photons in vacuum are different The frequency of X-ray photon is higher than the frequency of visible radiation photon. Both the photons have different energies. The wavelength of X-ray photon is less than the wavelength of visible radiation photon. ANSWER DOWNLOAD EXAMIANS APP
Physics Which one among the following components is used as an amplifying device? Diode Capacitor Transformer Transistor Diode Capacitor Transformer Transistor ANSWER DOWNLOAD EXAMIANS APP
Physics When a body is immersed in a liquid, the force acting on it is Mass Weight Both (A) and (B) Upthrust Mass Weight Both (A) and (B) Upthrust ANSWER DOWNLOAD EXAMIANS APP
Physics The nature of fuse wire is High resistance and high melting point. Low resistance and high melting point. High resistance and low melting point. Low resistance and low melting point. High resistance and high melting point. Low resistance and high melting point. High resistance and low melting point. Low resistance and low melting point. ANSWER DOWNLOAD EXAMIANS APP
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