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Rules to verify how many significant numbers has in a calculated quantity:
1. All nonzero digits are significant. As like 457 cm has three significant values; 0.25 g has two significant figures.
2. Zeros among nonzero digits are significant. As like, 1005 kg has four significant values; 1.03 cm has three significant values.
3. Zeros to the left of the first nonzero digits in a number are not significant; they merely indicate the position of the decimal point. As like, 0.02g has one important value; 0.0026 cm has two important figures.
4. When a number ends in zeros that are to the right of the decimal point, they are important. As like, 0.0200g has three important values; 3.0cm has two important figures.
A boy throws a ball vertically upward with a velocity of 6 meters per second. How long does it take the ball to return to the boy's hand? Ans: A boy throws a ball vertically
Are optical ports compatible? In general no there are optical ports are not compatible. Illuminator manufacturers use an exacting type of optical port to effect the connection
The temperature of a gas is held constant whereas its volume is reduced. The pressure the gas exerts on the walls of its container enhances because its molecules: a) stri
how much energy is required to raise an object of 300g that is initially at rest to a height of 2m and simultaneuosly give the object a velocity if 4m/s?
A concave lens when given in air has a focal length of 0.4 m and has a refractive index of 3/2. Evaluate its focal length when immersed in water of refractive index 4/3?
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What is a pure spectrum? provide an example. What do you mean by impure spectrum? show an example.
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Q. Describe diffrent principle of rays? Principle Ray I : The easy one it hits the lens smack dab in the middle as well as passes straight on through. Principle Ray II : P
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