364695
A ray of light is incident on a plane mirror at an angle of \(60^{\circ}\).The angle of deviation produced by the mirror is
1 \(120^{\circ}\)
2 \(30^{\circ}\)
3 \(60^{\circ}\)
4 \(90^{\circ}\)
Explanation:
From geometry of figure, the angle of deviation produced by mirror \( = {30^ \circ } + {30^ \circ } = {60^ \circ }\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364696
A flat mirror revolves at a constant angular velocity making \(4\,\pi \,rad{s^{ - 1}}.\) With what velocity will a light spot move along a spherical screen with a radius of \(10\;m\), if the mirror is at a centre of curvature of the screen?
364697
A plane mirror is reflecting a ray of incident light and is rotated through an angle of \(\theta \) about an axis which is perpendicular to the incident ray. If the plane mirror is perpendicular to incident ray initially, then
1 The reflected ray rotates through an angle of \(\theta \)
2 The reflected ray rotates through an angle of \(2\theta \)
3 The reflected ray does not rotate
4 None of these
Explanation:
By keeping the incident ray fixed, if plane mirror rotate through an angle \(\theta \) reflected ray rotates through an angle \(2\theta \)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364698
A watch shows time 3:25 when seen through a mirror, time appeared will be
1 \({\rm{9:35}}\)
2 \({\rm{8:35}}\)
3 \({\rm{8:25}}\)
4 \({\rm{7:35}}\)
Explanation:
Look at the image from the back side of the page then the time will be 8 : 35
364695
A ray of light is incident on a plane mirror at an angle of \(60^{\circ}\).The angle of deviation produced by the mirror is
1 \(120^{\circ}\)
2 \(30^{\circ}\)
3 \(60^{\circ}\)
4 \(90^{\circ}\)
Explanation:
From geometry of figure, the angle of deviation produced by mirror \( = {30^ \circ } + {30^ \circ } = {60^ \circ }\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364696
A flat mirror revolves at a constant angular velocity making \(4\,\pi \,rad{s^{ - 1}}.\) With what velocity will a light spot move along a spherical screen with a radius of \(10\;m\), if the mirror is at a centre of curvature of the screen?
364697
A plane mirror is reflecting a ray of incident light and is rotated through an angle of \(\theta \) about an axis which is perpendicular to the incident ray. If the plane mirror is perpendicular to incident ray initially, then
1 The reflected ray rotates through an angle of \(\theta \)
2 The reflected ray rotates through an angle of \(2\theta \)
3 The reflected ray does not rotate
4 None of these
Explanation:
By keeping the incident ray fixed, if plane mirror rotate through an angle \(\theta \) reflected ray rotates through an angle \(2\theta \)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364698
A watch shows time 3:25 when seen through a mirror, time appeared will be
1 \({\rm{9:35}}\)
2 \({\rm{8:35}}\)
3 \({\rm{8:25}}\)
4 \({\rm{7:35}}\)
Explanation:
Look at the image from the back side of the page then the time will be 8 : 35
364695
A ray of light is incident on a plane mirror at an angle of \(60^{\circ}\).The angle of deviation produced by the mirror is
1 \(120^{\circ}\)
2 \(30^{\circ}\)
3 \(60^{\circ}\)
4 \(90^{\circ}\)
Explanation:
From geometry of figure, the angle of deviation produced by mirror \( = {30^ \circ } + {30^ \circ } = {60^ \circ }\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364696
A flat mirror revolves at a constant angular velocity making \(4\,\pi \,rad{s^{ - 1}}.\) With what velocity will a light spot move along a spherical screen with a radius of \(10\;m\), if the mirror is at a centre of curvature of the screen?
364697
A plane mirror is reflecting a ray of incident light and is rotated through an angle of \(\theta \) about an axis which is perpendicular to the incident ray. If the plane mirror is perpendicular to incident ray initially, then
1 The reflected ray rotates through an angle of \(\theta \)
2 The reflected ray rotates through an angle of \(2\theta \)
3 The reflected ray does not rotate
4 None of these
Explanation:
By keeping the incident ray fixed, if plane mirror rotate through an angle \(\theta \) reflected ray rotates through an angle \(2\theta \)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364698
A watch shows time 3:25 when seen through a mirror, time appeared will be
1 \({\rm{9:35}}\)
2 \({\rm{8:35}}\)
3 \({\rm{8:25}}\)
4 \({\rm{7:35}}\)
Explanation:
Look at the image from the back side of the page then the time will be 8 : 35
364695
A ray of light is incident on a plane mirror at an angle of \(60^{\circ}\).The angle of deviation produced by the mirror is
1 \(120^{\circ}\)
2 \(30^{\circ}\)
3 \(60^{\circ}\)
4 \(90^{\circ}\)
Explanation:
From geometry of figure, the angle of deviation produced by mirror \( = {30^ \circ } + {30^ \circ } = {60^ \circ }\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364696
A flat mirror revolves at a constant angular velocity making \(4\,\pi \,rad{s^{ - 1}}.\) With what velocity will a light spot move along a spherical screen with a radius of \(10\;m\), if the mirror is at a centre of curvature of the screen?
364697
A plane mirror is reflecting a ray of incident light and is rotated through an angle of \(\theta \) about an axis which is perpendicular to the incident ray. If the plane mirror is perpendicular to incident ray initially, then
1 The reflected ray rotates through an angle of \(\theta \)
2 The reflected ray rotates through an angle of \(2\theta \)
3 The reflected ray does not rotate
4 None of these
Explanation:
By keeping the incident ray fixed, if plane mirror rotate through an angle \(\theta \) reflected ray rotates through an angle \(2\theta \)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364698
A watch shows time 3:25 when seen through a mirror, time appeared will be
1 \({\rm{9:35}}\)
2 \({\rm{8:35}}\)
3 \({\rm{8:25}}\)
4 \({\rm{7:35}}\)
Explanation:
Look at the image from the back side of the page then the time will be 8 : 35
364695
A ray of light is incident on a plane mirror at an angle of \(60^{\circ}\).The angle of deviation produced by the mirror is
1 \(120^{\circ}\)
2 \(30^{\circ}\)
3 \(60^{\circ}\)
4 \(90^{\circ}\)
Explanation:
From geometry of figure, the angle of deviation produced by mirror \( = {30^ \circ } + {30^ \circ } = {60^ \circ }\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364696
A flat mirror revolves at a constant angular velocity making \(4\,\pi \,rad{s^{ - 1}}.\) With what velocity will a light spot move along a spherical screen with a radius of \(10\;m\), if the mirror is at a centre of curvature of the screen?
364697
A plane mirror is reflecting a ray of incident light and is rotated through an angle of \(\theta \) about an axis which is perpendicular to the incident ray. If the plane mirror is perpendicular to incident ray initially, then
1 The reflected ray rotates through an angle of \(\theta \)
2 The reflected ray rotates through an angle of \(2\theta \)
3 The reflected ray does not rotate
4 None of these
Explanation:
By keeping the incident ray fixed, if plane mirror rotate through an angle \(\theta \) reflected ray rotates through an angle \(2\theta \)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364698
A watch shows time 3:25 when seen through a mirror, time appeared will be
1 \({\rm{9:35}}\)
2 \({\rm{8:35}}\)
3 \({\rm{8:25}}\)
4 \({\rm{7:35}}\)
Explanation:
Look at the image from the back side of the page then the time will be 8 : 35