Physics Why are we able to hear short wave broadcasts better than long wave broadcasts ? Short waves are unaffected by atmospheric disturbances. Short waves are more energetic than long waves. By convention, short waves are meant for long distances, whereas long waves are reserved for short distances. Short wave broadcasts are made by nearby radio stations. Short waves are unaffected by atmospheric disturbances. Short waves are more energetic than long waves. By convention, short waves are meant for long distances, whereas long waves are reserved for short distances. Short wave broadcasts are made by nearby radio stations. ANSWER DOWNLOAD EXAMIANS APP
Physics Soap bubble attains spherical shape due to ________ Surface tension Inertia Viscosity Pressure Surface tension Inertia Viscosity Pressure ANSWER DOWNLOAD EXAMIANS APP
Physics A parallel-plate capacitor of capacitance C1 is made using two gold plates. Another parallel-plate capacitor of capacitance C2 is made using two aluminium plates with same plate separation, and all the four plates are of same area. If rg and ra are respectively the electrical resistivities of gold and aluminium, then which one of the following relations is correct? C1 = C2 C1>C2 C2>C1 C1pa = C2pg C1 = C2 C1>C2 C2>C1 C1pa = C2pg ANSWER DOWNLOAD EXAMIANS APP
Physics Why does water tank appear shallower when viewed from the top? Due to refraction Due to total internal reflection Due to diffraction Due to reflection Due to refraction Due to total internal reflection Due to diffraction Due to reflection ANSWER DOWNLOAD EXAMIANS APP
Physics To prevent damage from lightning, lightning conductors are used on tall structures. The lightning conductor Can be of any shape Should be in the form of a vertical rod Should be made of a good conductor like copper with sharp-pointed edges Should be made of a good conductor but can be of any shape Can be of any shape Should be in the form of a vertical rod Should be made of a good conductor like copper with sharp-pointed edges Should be made of a good conductor but can be of any shape ANSWER DOWNLOAD EXAMIANS APP
Physics Rear view mirror of car is convex or concave? Can't be determined Concave Both A & B Convex Can't be determined Concave Both A & B Convex ANSWER DOWNLOAD EXAMIANS APP
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