Physics Why the needle of iron swims on water surface when it is kept gently ? It will remain under the water, when it will displace more water than its weight The density of needle is less than that of water Due to surface tension Due to its shape It will remain under the water, when it will displace more water than its weight The density of needle is less than that of water Due to surface tension Due to its shape ANSWER DOWNLOAD EXAMIANS APP
Physics Optic fibres are used in : Endoscopy X-ray photos Ultrasound scans CAT scans Endoscopy X-ray photos Ultrasound scans CAT scans ANSWER DOWNLOAD EXAMIANS APP
Physics The safest hammers are those with heads that are Welded and alloyed Cast steel and chiseled Chiseled and drop forged Alloy and drop-forged steel Welded and alloyed Cast steel and chiseled Chiseled and drop forged Alloy and drop-forged steel ANSWER DOWNLOAD EXAMIANS APP
Physics The blue colour of sky is due to Scattering of longer wavelengths of sunlight in the atmosphere Scattering of shorter wavelengths of sunlight in the atmosphere Reflection of sunlight Refraction of sunlight Scattering of longer wavelengths of sunlight in the atmosphere Scattering of shorter wavelengths of sunlight in the atmosphere Reflection of sunlight Refraction of sunlight ANSWER DOWNLOAD EXAMIANS APP
Physics Which determines the frequency of a sound wave? Amplitude Speed Medium Source Amplitude Speed Medium Source ANSWER DOWNLOAD EXAMIANS APP
Physics Lightning is caused due to Electric leak Electric discharge Electric pressure Electric power Electric leak Electric discharge Electric pressure Electric power ANSWER DOWNLOAD EXAMIANS APP
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