A hypothetical atom has atomic number 56. Using the Bohr hypothesis, find the frequency of revolution for the electron in the 63th energy level, in Hz.
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Q: 11) A convex mirror has a focal length of (-8) cm. If an object is placed 15 cm from the surface, at…
A: Given data: The focal length is f=-8 cm. The object distance is u=15 cm.
Q: A
A: Option A ) A is right answer. Explanation Condition for critical angle: a light ray is in the more…
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Q: 28. What type of lense is this? parallel light rays focal point axis аxis focal length A. Concave B.…
A: 28. In the given ray diagram, all the rays are converging at focal point.
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A: given distance of images from lens= v= -(6+L)cm distance of object from lens= u =-L cm Height of…
Q: 11) A convex mirror has a focal length of ( -8) cm. If an object is placed 15 cm from the surface,…
A: Given data: Focal length, f = -8 cm Distance of the object, do = 15 cm
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A: Given that, Power = +2.0 D
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Q: Concave mirrors cause an incoming parallel light beam to converge True False
A: A concave mirror has the reflecting surface which caves inwards. Examples of concave mirrors are the…
Q: Which of the following is a real image? 1) An image formed in a plain mirror 2) An image formed by a…
A: Real image: A real image can only be formed by converging the rays coming from the object.…
Q: vision
A: Option c is the right answer Farsightedness
Q: Draw a ray diagram & draw the image formed.
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Q: 5. What is an example of a real image? *
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Q: 22. Which ray diagram shows a virtual image? 2F 2F 2F 2F O Left O Centre O Right None
A: Answer (left) An image is said to be virtual if it is formed on the side of object i.e. on left side
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Q: Describe the image being produced by a plane mirror.
A: 1. Image formed by plane mirror is of same size as of object. 2. Image is formed behind the mirror…
Q: Why does the bottom of a pond look less deep than its real depth? Support your answer with a diagram
A: The refractive index of water is greater than that of air.Hence light from the bottom of the pond…
Q: What are the types of mirror
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A: concept used: Refraction of light
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A: Electric flux is the number of electric lines entering normally through a surface
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Q: Investigate different types of microscopes.Learn how image is formed in a compound microscope.
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A: The height of the image is one fieth of height of the object.The distance of the object from the…
Q: The Image distance is 151 cm, the magnification is -0.9, & the image height is -56 cm. Determine the…
A: Image distance is v=151 cm Magnification is m=-0.9 Image height is hi=-56 cm Find: (a) Focal length.…
Q: The diameter of the reflecting surface of a spherical mirror is called a/an A) principal axis B)…
A: The principal axis of a spherical mirror is the line passing through the center of the mirror that…
Q: An image formed by a concave mirror on a screen is called __________? A) Virtual image B) Real image…
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Q: Projected images are A. Virtual images B. Neither real nor virtual. C. Real images…
A: Required : What are projected images
Q: Calculate the focal length of a convex spherical mirror which produces an image 1/6 the…
A: Given data: Size of object u=-12 cm ( left side of mirror) Linear magnification m=16
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