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10 questions
When a ray of light entering from air is incident on the surface of a glass slab at an angle of 90°, the measure of angle of refraction=
The focal length of a plane mirror is ____________
As per laws of reflection of light angle of incidence is always equal to angle of ___________.
The type of mirror used in reflector in automobile lights is
Plane mirror
Concave mirror
Convex mirror
None of the above
The range of wavelength of visible light in Å units is ________
A mirror having focal length –15 cm is _________________
Plane mirror
Concave mirror
Convex mirror
None of these
Assertion: For observing the traffic at the hairpin bend in the mountains a plane mirror is preferred over convex or concave mirror.
Reason: A convex mirror has a much larger field view than a plane mirror or a concave mirror.
Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
Assertion is true but Reason is false.
Assertion is false but Reason is true.
Which of the following is not the characteristics of the image formed on a plane mirror?
Virtual
Laterally inverted
Erect
Enlarged
__________________ waves do not require material medium for propagation.
A bundle of light rays is called a ______ of light.
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