Power of a Lens
1D If there is convex lens of power 1 D then its focal length is equal 1 metre. The power of a convex lens is positive and concave lens is negative. If the focal lengths of the individual lenses f 1 f 2 are f 1 , f 2 ....... then the focal length of the equivalent lens is given ..
24.
In Young's experiment, let the lights of l = 5.4 x 10 - 7 m and 6.85 x 10 - 8 m be used in turn. Keeping the same geometry, compare the fringe widths in the two case..
Question 24
Question: Two thin lenses of power +5 D and -2 D are placed in contact with each other. Focal length of the combination is 1. +3 m 2. -3 m 3. 0.33 m 4. -0.33 m Answer: ..
Abbreviations in Power of 10 (Used in SI units)
Prefixes are used for large and small quantities. The following table gives prefixes, their symbol and their values in powers of 10 used in SI units. Prefix Symbol Power of 10 deci d 10 - 1 deka da(D) 10 1 centi c 10 - 2 hecto h ..
Optics Problems - Numerical 24
24. - In Young's experiment, let the lights of l = 5.4 x 10 - 7 m and 6.85 x 10 - 8 m be used in turn. Keeping the same geometry, compare the fringe widths in the two case..
Express (44)4 as a single power of the base.
Express (4 4 ) 4 as a single power of the base. => 4 24 or 4 32 or 4 16 or 4 18..
Low Efficiency
In amplitude modulation, the sidebands contain the signal. The power in the sidebands is the only useful power. The power carrier by the side bands is only 33.3% even when there is 100% modulation. If modulation is 50%, then power carried by the sideban..
2) Levers of the second order
In this the weight is in the middle between the power and the fulcrum. For example human body resting on toes. Here the toe forms the fulcrum and contracting calf muscle provides effor..
Neutralization
In a neutralization reaction an acid combines with a base, neutralizing the power of acid with a base and forms a molecule of water and the respective salt. In general, a neutralization reaction can be written as: Base + Acid Salt + Wat..
Degree and Types of Polynomials
In case of a polynomial of one variable the highest power of the variable is called the degree of the polynomial. 3y-7y 3 has degree 3 and..
Result
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