The diagram below shows a block on a horizontal frictionless ground.other than its weight W, normal reaction N from ground and the 100N force at angle of 30 above the horizontal,an additional force F also acts on the block.if the block remain in equilibrium ,which of the following statement should be correct?
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Opaque objects block light from traveling through them. Most of the light is either reflected by the object or absorbed and converted to thermal energy. Materials such as wood, stone, and metals are opaque to visible light.
Examples of Transparent Materials or Objects
Glasses.
Clear Plastics.
Diamond.
Water.
Air.
Prism.
Clear cellophane sheet.
Frosted Glass.
Materials like frosted glass and some plastics are called translucent. When light strikes translucent materials, only some of the light passes through them. The light does not
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