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Physics CBSE Live product
Class 10
Light reflection and refraction
Annual Revision II - Light
6.
TBQ - Refraction
Question:
4
m.
1
.
Which of the following remains unchanged during refraction?
Direction
Frequency
Velocity
Wavelength
2
.
The image formed by a concave mirror is observed to be virtual, erect and larger than the object. the position of the object should be-
between the focus and the centre of curvature
between the pole of the mirror and the focus
beyond the centre of curvature
at the centre of curvature
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