Physics The focal length of a concave mirror with a radius of curvature of 20.0 cm is : 20 cm 10 cm 15 cm 5 cm 20 cm 10 cm 15 cm 5 cm ANSWER DOWNLOAD EXAMIANS APP
Physics When the Sun is near the horizon during the morning or evening, it appears reddish. The phenomenon that is responsible for this observation is Scattering of light Reflection of light Refraction of light Dispersion of light Scattering of light Reflection of light Refraction of light Dispersion of light ANSWER DOWNLOAD EXAMIANS APP
Physics Which one of the following determines the sharpness of image in a camera ? The aperture Size of the camera The focal length of the lens The exposure time The aperture Size of the camera The focal length of the lens The exposure time ANSWER DOWNLOAD EXAMIANS APP
Physics Indicate the false statement about the resistance of a wire Resistance of metallic wire increases with increase in temperature It is directly proportional to the length of wire It is directly proportional to the area of cross-section of wire It depends on material of wire Resistance of metallic wire increases with increase in temperature It is directly proportional to the length of wire It is directly proportional to the area of cross-section of wire It depends on material of wire ANSWER DOWNLOAD EXAMIANS APP
Physics The resistance of the human body (dry condition) is of the order of 103 Ohm 101 Ohm None of these 102 Ohm 103 Ohm 101 Ohm None of these 102 Ohm ANSWER DOWNLOAD EXAMIANS APP
Physics Find the resistance (in mega) of a wire of length 20m, cross sectional area 1 cm2 and made of a material of resistivity 200m. 2000 4000 80 40 2000 4000 80 40 ANSWER DOWNLOAD EXAMIANS APP
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