Calculate the time period (in seconds) of a sound wave of wavelength 2m travelling with a speed of 250 m/s.
A) 500 B) 0.008 C) 0.016 D) 250
Answers
Answer:
B) 0.008
Explanation:
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Answer:
What type of mirror is used to obtain a ‘ real image’?
(a) What do you understand by the term ‘ virtual image’?
(b) Name two type of mirror which always form a virtual image.
(c) Is the virtual image always erect ?
Prove that for a concave mirror , the radius of curvature is twice its focal length.
What is the minimum number of rays required for locating the image formed by a concave mirror for an object ? Draw a ray diagram to show the formation of image by a concave mirror.
Draw a ray diagram to show the (a) position and (b) nature of the image formed when object is placed between focus F and pole P of a concave mirror.
What type of mirror is used to obtain a ‘ real image’?
(a) What do you understand by the term ‘ virtual image’?
(b) Name two type of mirror which always form a virtual image.
(c) Is the virtual image always erect ?
Prove that for a concave mirror , the radius of curvature is twice its focal length.
What is the minimum number of rays required for locating the image formed by a concave mirror for an object ? Draw a ray diagram to show the formation of image by a concave mirror.
Draw a ray diagram to show the (a) position and (b) nature of the image formed when object is placed between focus F and pole P of a concave mirror.
What type of mirror is used to obtain a ‘ real image’?
(a) What do you understand by the term ‘ virtual image’?
(b) Name two type of mirror which always form a virtual image.
(c) Is the virtual image always erect ?
Prove that for a concave mirror , the radius of curvature is twice its focal length.
What is the minimum number of rays required for locating the image formed by a concave mirror for an object ? Draw a ray diagram to show the formation of image by a concave mirror.
Draw a ray diagram to show the (a) position and (b) nature of the image formed when object is placed between focus F and pole P of a concave mirror.
What do you understand by the term ‘ real image’ ?