364674
A man of height \(1.6\;m\) wishes to see his full image in a plane mirror placed at a distance of \(2\;m\). The minimum length of the mirror should be
1 \(0.4\;m\)
2 \(0.8\;m\)
3 \(1.6\;m\)
4 \(2.4\;m\)
Explanation:
The minimum length of the mirror required for the purpose is half the height of the person\(,i.e.{\text{ }}0.8\;m.\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364675
A ray deviates at \({90^{\circ}}\) after suffering reflection from a mirror. The angle of incidence is
1 \({90^{\circ}}\)
2 \({30^{\circ}}\)
3 \({60^{\circ}}\)
4 \({45^{\circ}}\)
Explanation:
For angle of incident \({\angle i}\) on a plane mirror, the ray suffers a deviation of \(\angle (\pi - 2\,i).\) \(\therefore \pi - 2i = 90^\circ \Rightarrow i = 45^\circ .\) So correct option is (4)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364676
A plane mirror reflects a beam of light to form a real image. The incident beam is
1 Parallel
2 Convergent
3 Divergent
4 Any one of the above
Explanation:
For a convergent beam the object is virtual and the image is real
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364677
A point source of light is placed in front of a plane mirror. Then
1 Only the reflected rays close to the normal meet at a point when produced backward.
2 All the reflected rays meet at a point when produced backward
3 Light of different colours make different images.
4 Only the reflected rays making a small angle with the mirror, meet at a point when produced backward.
364674
A man of height \(1.6\;m\) wishes to see his full image in a plane mirror placed at a distance of \(2\;m\). The minimum length of the mirror should be
1 \(0.4\;m\)
2 \(0.8\;m\)
3 \(1.6\;m\)
4 \(2.4\;m\)
Explanation:
The minimum length of the mirror required for the purpose is half the height of the person\(,i.e.{\text{ }}0.8\;m.\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364675
A ray deviates at \({90^{\circ}}\) after suffering reflection from a mirror. The angle of incidence is
1 \({90^{\circ}}\)
2 \({30^{\circ}}\)
3 \({60^{\circ}}\)
4 \({45^{\circ}}\)
Explanation:
For angle of incident \({\angle i}\) on a plane mirror, the ray suffers a deviation of \(\angle (\pi - 2\,i).\) \(\therefore \pi - 2i = 90^\circ \Rightarrow i = 45^\circ .\) So correct option is (4)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364676
A plane mirror reflects a beam of light to form a real image. The incident beam is
1 Parallel
2 Convergent
3 Divergent
4 Any one of the above
Explanation:
For a convergent beam the object is virtual and the image is real
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364677
A point source of light is placed in front of a plane mirror. Then
1 Only the reflected rays close to the normal meet at a point when produced backward.
2 All the reflected rays meet at a point when produced backward
3 Light of different colours make different images.
4 Only the reflected rays making a small angle with the mirror, meet at a point when produced backward.
364674
A man of height \(1.6\;m\) wishes to see his full image in a plane mirror placed at a distance of \(2\;m\). The minimum length of the mirror should be
1 \(0.4\;m\)
2 \(0.8\;m\)
3 \(1.6\;m\)
4 \(2.4\;m\)
Explanation:
The minimum length of the mirror required for the purpose is half the height of the person\(,i.e.{\text{ }}0.8\;m.\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364675
A ray deviates at \({90^{\circ}}\) after suffering reflection from a mirror. The angle of incidence is
1 \({90^{\circ}}\)
2 \({30^{\circ}}\)
3 \({60^{\circ}}\)
4 \({45^{\circ}}\)
Explanation:
For angle of incident \({\angle i}\) on a plane mirror, the ray suffers a deviation of \(\angle (\pi - 2\,i).\) \(\therefore \pi - 2i = 90^\circ \Rightarrow i = 45^\circ .\) So correct option is (4)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364676
A plane mirror reflects a beam of light to form a real image. The incident beam is
1 Parallel
2 Convergent
3 Divergent
4 Any one of the above
Explanation:
For a convergent beam the object is virtual and the image is real
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364677
A point source of light is placed in front of a plane mirror. Then
1 Only the reflected rays close to the normal meet at a point when produced backward.
2 All the reflected rays meet at a point when produced backward
3 Light of different colours make different images.
4 Only the reflected rays making a small angle with the mirror, meet at a point when produced backward.
364674
A man of height \(1.6\;m\) wishes to see his full image in a plane mirror placed at a distance of \(2\;m\). The minimum length of the mirror should be
1 \(0.4\;m\)
2 \(0.8\;m\)
3 \(1.6\;m\)
4 \(2.4\;m\)
Explanation:
The minimum length of the mirror required for the purpose is half the height of the person\(,i.e.{\text{ }}0.8\;m.\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364675
A ray deviates at \({90^{\circ}}\) after suffering reflection from a mirror. The angle of incidence is
1 \({90^{\circ}}\)
2 \({30^{\circ}}\)
3 \({60^{\circ}}\)
4 \({45^{\circ}}\)
Explanation:
For angle of incident \({\angle i}\) on a plane mirror, the ray suffers a deviation of \(\angle (\pi - 2\,i).\) \(\therefore \pi - 2i = 90^\circ \Rightarrow i = 45^\circ .\) So correct option is (4)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364676
A plane mirror reflects a beam of light to form a real image. The incident beam is
1 Parallel
2 Convergent
3 Divergent
4 Any one of the above
Explanation:
For a convergent beam the object is virtual and the image is real
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364677
A point source of light is placed in front of a plane mirror. Then
1 Only the reflected rays close to the normal meet at a point when produced backward.
2 All the reflected rays meet at a point when produced backward
3 Light of different colours make different images.
4 Only the reflected rays making a small angle with the mirror, meet at a point when produced backward.
