A fish lying inside water appears slightly above its actual depth due to the refraction of light. When light passes from water to air, it bends away from the normal. This bending causes the fish to appear at a shallower ...
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A solar eclipse occurs on a new moon day (Pratipada). This is when the Moon comes between the Sun and Earth, casting its shadow on Earth’s surface and causing a temporary obscuration of the Sun’s light.
A cut diamond sparkles due to its unique molecular structure. The facets of a diamond are designed to reflect and refract light internally, maximizing its brilliance and dispersion of colors, creating the sparkling effect known as “fire” in diamonds.
The phenomenon of light returning after hitting a smooth surface is called reflection. This occurs when light rays bounce off a surface at an angle equal to the angle at which they hit the surface, obeying the law of reflection.
The speed of light in descending order is diamond > glass > water. Light travels fastest in diamond, slower in glass, and slowest in water due to differences in their optical densities and molecular structures affecting the speed of light ...
The instrument used to identify and draw sound waves is called a “sonar”. Sonar stands for Sound Navigation and Ranging. It emits sound waves into water and detects the echoes bounced back from objects, helping in navigation, communication, and underwater ...
The instrument used to detect submerged objects is called “Sonar”. Sonar stands for Sound Navigation and Ranging. It operates by emitting sound waves into water and detecting the echoes bounced back from underwater objects. Sonar is essential for applications like ...
When soldiers march in step on a bridge, their synchronized steps can match the bridge’s natural frequency, leading to resonance. This resonance can amplify the vibrations and potentially cause structural failure. Therefore, soldiers are instructed not to march in step ...
Women’s voices are thinner (shrill) compared to men’s voices primarily because the frequency is higher. Higher frequency results in a higher pitch, characteristic of women’s voices. This is due to women having shorter and thinner vocal cords that vibrate at ...
The intensity of sound during normal conversation typically ranges from 50 to 60 decibels. This level is comfortable for human ears and is common in everyday social interactions.