364653
Given figure shows two plane mirrors and an object \(O\) placed between them. What will be distance of the first three images from the mirror \({M_2}?\)
1 \(2\;cm,8\;cm,14\;cm\)
2 \(2\;cm,12\;cm,18\;cm\)
3 \(2\;cm,18\;cm,22\;cm\)
4 \(2\;cm,24\;cm,38\;cm\)
Explanation:
\(I_{1}\) is the image of \(O\) in \(M_{2} \cdot I_{2}\) is the image of \(O\) in \(M_{1} . I_{3}\) is the image of \(I_{1}\) in \(M_{1}\). The distance of three images from \(M_{2}\) are \(2\;cm,18\;cm\), \(22\;cm\) respectively.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364654
Two plane mirrors are inclined at \(70^\circ \) A ray incident on one mirror at angle \(\theta \) after reflection falls on second mirror and is reflected from there parallel to first mirror. The value of \(\theta \) is
364655
Two plane mirrors inclined to each other at an angle \(72^\circ \) . What is the number of images formed?
1 5
2 3
3 7
4 9
Explanation:
\[n = \left\{ {\begin{array}{*{20}{l}} {\frac{{360^\circ }}{\theta } - 1,when\frac{{360^\circ }}{{\theta ^\circ }}is\;odd\;and\;the\;object,}\\ {lies\;symmetrically}\\ {\frac{{360^\circ }}{\theta },when\frac{{360^\circ }}{{\theta ^\circ }}is\;odd\;and\;the\;object,}\\ {lies\;unsymmetrically} \end{array}} \right.\] Here, \(\frac{{360^\circ }}{{72}} = 5,\) so number of images formed are either 5 or 4. Since 4 is not present in options, so it is assumed that object lies unsymmetrically, and number of images formed are 5.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364656
What should be the angle between two plane mirrors so that whatever be the angle of incidence, the incident ray and the reflected ray from the two mirrors be parallel to each other
364653
Given figure shows two plane mirrors and an object \(O\) placed between them. What will be distance of the first three images from the mirror \({M_2}?\)
1 \(2\;cm,8\;cm,14\;cm\)
2 \(2\;cm,12\;cm,18\;cm\)
3 \(2\;cm,18\;cm,22\;cm\)
4 \(2\;cm,24\;cm,38\;cm\)
Explanation:
\(I_{1}\) is the image of \(O\) in \(M_{2} \cdot I_{2}\) is the image of \(O\) in \(M_{1} . I_{3}\) is the image of \(I_{1}\) in \(M_{1}\). The distance of three images from \(M_{2}\) are \(2\;cm,18\;cm\), \(22\;cm\) respectively.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364654
Two plane mirrors are inclined at \(70^\circ \) A ray incident on one mirror at angle \(\theta \) after reflection falls on second mirror and is reflected from there parallel to first mirror. The value of \(\theta \) is
364655
Two plane mirrors inclined to each other at an angle \(72^\circ \) . What is the number of images formed?
1 5
2 3
3 7
4 9
Explanation:
\[n = \left\{ {\begin{array}{*{20}{l}} {\frac{{360^\circ }}{\theta } - 1,when\frac{{360^\circ }}{{\theta ^\circ }}is\;odd\;and\;the\;object,}\\ {lies\;symmetrically}\\ {\frac{{360^\circ }}{\theta },when\frac{{360^\circ }}{{\theta ^\circ }}is\;odd\;and\;the\;object,}\\ {lies\;unsymmetrically} \end{array}} \right.\] Here, \(\frac{{360^\circ }}{{72}} = 5,\) so number of images formed are either 5 or 4. Since 4 is not present in options, so it is assumed that object lies unsymmetrically, and number of images formed are 5.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364656
What should be the angle between two plane mirrors so that whatever be the angle of incidence, the incident ray and the reflected ray from the two mirrors be parallel to each other
364653
Given figure shows two plane mirrors and an object \(O\) placed between them. What will be distance of the first three images from the mirror \({M_2}?\)
1 \(2\;cm,8\;cm,14\;cm\)
2 \(2\;cm,12\;cm,18\;cm\)
3 \(2\;cm,18\;cm,22\;cm\)
4 \(2\;cm,24\;cm,38\;cm\)
Explanation:
\(I_{1}\) is the image of \(O\) in \(M_{2} \cdot I_{2}\) is the image of \(O\) in \(M_{1} . I_{3}\) is the image of \(I_{1}\) in \(M_{1}\). The distance of three images from \(M_{2}\) are \(2\;cm,18\;cm\), \(22\;cm\) respectively.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364654
Two plane mirrors are inclined at \(70^\circ \) A ray incident on one mirror at angle \(\theta \) after reflection falls on second mirror and is reflected from there parallel to first mirror. The value of \(\theta \) is
364655
Two plane mirrors inclined to each other at an angle \(72^\circ \) . What is the number of images formed?
1 5
2 3
3 7
4 9
Explanation:
\[n = \left\{ {\begin{array}{*{20}{l}} {\frac{{360^\circ }}{\theta } - 1,when\frac{{360^\circ }}{{\theta ^\circ }}is\;odd\;and\;the\;object,}\\ {lies\;symmetrically}\\ {\frac{{360^\circ }}{\theta },when\frac{{360^\circ }}{{\theta ^\circ }}is\;odd\;and\;the\;object,}\\ {lies\;unsymmetrically} \end{array}} \right.\] Here, \(\frac{{360^\circ }}{{72}} = 5,\) so number of images formed are either 5 or 4. Since 4 is not present in options, so it is assumed that object lies unsymmetrically, and number of images formed are 5.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364656
What should be the angle between two plane mirrors so that whatever be the angle of incidence, the incident ray and the reflected ray from the two mirrors be parallel to each other
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PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364653
Given figure shows two plane mirrors and an object \(O\) placed between them. What will be distance of the first three images from the mirror \({M_2}?\)
1 \(2\;cm,8\;cm,14\;cm\)
2 \(2\;cm,12\;cm,18\;cm\)
3 \(2\;cm,18\;cm,22\;cm\)
4 \(2\;cm,24\;cm,38\;cm\)
Explanation:
\(I_{1}\) is the image of \(O\) in \(M_{2} \cdot I_{2}\) is the image of \(O\) in \(M_{1} . I_{3}\) is the image of \(I_{1}\) in \(M_{1}\). The distance of three images from \(M_{2}\) are \(2\;cm,18\;cm\), \(22\;cm\) respectively.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364654
Two plane mirrors are inclined at \(70^\circ \) A ray incident on one mirror at angle \(\theta \) after reflection falls on second mirror and is reflected from there parallel to first mirror. The value of \(\theta \) is
364655
Two plane mirrors inclined to each other at an angle \(72^\circ \) . What is the number of images formed?
1 5
2 3
3 7
4 9
Explanation:
\[n = \left\{ {\begin{array}{*{20}{l}} {\frac{{360^\circ }}{\theta } - 1,when\frac{{360^\circ }}{{\theta ^\circ }}is\;odd\;and\;the\;object,}\\ {lies\;symmetrically}\\ {\frac{{360^\circ }}{\theta },when\frac{{360^\circ }}{{\theta ^\circ }}is\;odd\;and\;the\;object,}\\ {lies\;unsymmetrically} \end{array}} \right.\] Here, \(\frac{{360^\circ }}{{72}} = 5,\) so number of images formed are either 5 or 4. Since 4 is not present in options, so it is assumed that object lies unsymmetrically, and number of images formed are 5.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364656
What should be the angle between two plane mirrors so that whatever be the angle of incidence, the incident ray and the reflected ray from the two mirrors be parallel to each other
