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OpticsQuestion and Answers: Page 1

Question Number 223847    Answers: 3   Comments: 1

Question Number 207005    Answers: 0   Comments: 0

Question Number 181256    Answers: 0   Comments: 7

$$\frac{\mathrm{1}}{{f}}=\left({n}−\mathrm{1}\right)\left(\frac{\mathrm{1}}{{R}_{\mathrm{1}} }−\frac{\mathrm{1}}{{R}_{\mathrm{2}} }\right)\:\:{lense}'{s}\:{maker}\:{equation}. \\ $$$${when}\:{is}\:{positive}\:{or}\:{negative}\:{R}_{\mathrm{1}} \:{and}\:\:{R}_{\mathrm{2}} ? \\ $$

Question Number 181172    Answers: 0   Comments: 2

$${write}\:{snell}'{s}\:{law}\:{that}\:{light}\:{move}\:{a}\: \\ $$$${concentrative}\:{medium}\:{to}\:{nonconcentrative} \\ $$$${medium}\:{and}\:{show}\:{with}\:{a}\:{shape}. \\ $$

Question Number 181171    Answers: 0   Comments: 1

$${prove}\:{snell}'{s}\:{law} \\ $$

Question Number 176966    Answers: 1   Comments: 1

Question Number 174095    Answers: 0   Comments: 0

$${prove}\:{the}\:{distance}\:{between}\:{object}\:{and} \\ $$$${image}\:{of}\:{glass}\:{slab}. \\ $$

Question Number 170721    Answers: 0   Comments: 1

$${Which}\:{is}\:{the}\:{true}\:{magnefication}'{s}\: \\ $$$${formula}\:{for}\:{the}\:{concave}\:{mirror}? \\ $$$${m}=\frac{{f}}{{p}−{f}}? \\ $$$${m}=−\frac{{f}}{{p}−{f}}? \\ $$

Question Number 170720    Answers: 0   Comments: 0

$${Prove}\:{the}\:{magnefication}\:{for}\:{concave} \\ $$$${mirror}. \\ $$$${m}=\frac{{f}}{\mid{f}−{p}\mid} \\ $$

Question Number 165617    Answers: 1   Comments: 0

$${what}\:{is}\:{the}\:{focal}\:{length}\:{formula}\:{for}\: \\ $$$${combined}\:{lenses}?\:{if}\:{lenses}\:{more}\:{than}\: \\ $$$${tow}? \\ $$

Question Number 164821    Answers: 0   Comments: 9

$${prove}\:{that}\:\:{n}=\frac{\mathrm{360}^{°} }{\propto}−\mathrm{1} \\ $$$${n}={number}\:{of}\:\:{multiple}\:{images}\: \\ $$

Question Number 139060    Answers: 0   Comments: 8

Question Number 137547    Answers: 0   Comments: 1

Question Number 129103    Answers: 1   Comments: 0

$${how}\:{is}\:{the}\:{significant}\:{figures}\:{in} \\ $$$$\mathrm{132}+\mathrm{32}.\mathrm{67}+\mathrm{23}+\mathrm{566}?? \\ $$

Question Number 84667    Answers: 0   Comments: 1

Question Number 69851    Answers: 0   Comments: 0

$${A}\:{convex}\:{mirror}\:{of}\:{radius}\:{of}\:{curvature} \\ $$$$\mathrm{30}{cm}\:{forms}\:{a}\:{real}\:{image}\:\mathrm{20}{cm}\:{from}\:{its} \\ $$$${surface}.{Find}\:{whether}\:{the}\:{imavect}\:{is} \\ $$$${erect}\:{or}\:{inverted}.{Please}\:{explain}\:{how}\: \\ $$$${possible}\:{this}\:{is}. \\ $$$$ \\ $$$${Thanks}\:{in}\:{advance}. \\ $$

Question Number 60597    Answers: 0   Comments: 3

Question Number 54357    Answers: 2   Comments: 1

Question Number 52593    Answers: 1   Comments: 1

Question Number 50453    Answers: 0   Comments: 3

Question Number 47912    Answers: 0   Comments: 0

Question Number 45610    Answers: 0   Comments: 1

Question Number 44676    Answers: 1   Comments: 6

Question Number 43596    Answers: 0   Comments: 0

Question Number 43571    Answers: 1   Comments: 0

Question Number 42475    Answers: 0   Comments: 1

$${A}\:{signpost}\:\mathrm{4}.\mathrm{5}{cm}\:{high}\:{is}\:\mathrm{30}{cm}\:{away}\circledast \\ $$$${from}\:{Mrs}\:{Rahup}.{What}\:{is}\:{the} \\ $$$${height}\:{of}\:{the}\:{image}\:{formed}\:{in}\:{her} \\ $$$${retina}?\left({Take}\:{the}\:{eye}\:{lens}-{retina}\right. \\ $$$$\left.{distance}\:{as}\:\mathrm{1}.\mathrm{5}{cm}\right). \\ $$

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