Define apparent and real depth.

Q: Define Far point and Near point of human eye?

A: The near point of the eye is the minimum distance of the object from the eye, which can be seen…

Q: Define the term farsightedness.

A: Farsightedness is an eyesight problem. This problem is known as hyperopia. In this vision condition,…

Q: Define 1 dioptre of power of a lens.

A: Power of a lens is its ability to converge rays of light falling on it. Diopter is the unit of…

Q: Explain converging lens image formation.

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Q: focal length

A: Diverging lens of focal length 0.5 m

Q: A small microwave oven is shown below, looking at it from overhead. (The circle in the middle of the…

A: Given information: The frequency of the microwaves (f) = 1.5 GHz The dimensions of the box (l×w) =…

Q: Seeing Venus would be impossible without a telescope * O true Error

A: Venus is one of the brightest objects in the night sky. Venus is visible without a telescope. Venus…

Q: Is there a difference in viewing angle to the Sun from opposite sides of the Earth?

A:

Q: The diagram below shows a light ray striking a plane mirror. Light ray

A: Given  Angle of incidence θi=600

Q: Give difference between microscope and telescope.

A: Microscopes and telescopes function same by letting a person view objects not visible to the naked…

Q: When an object is placed 5 cm from a lens, the image created is upright and 1.7 times larger.…

A: Position of the image,  Magnification of the image,

Q: The pupil of your eye is smaller in bright light than in dim light. Explain how this makes images…

A: The size of pupil

Q: Define distance of distinct vision and give its range.

A: The minimum distance from the eye at which an object appears to be distinct i.e., a very clear image…

Q: What is meant by azimuth angle?

A: Required : What is meant by azimuth angle.

Q: 23. Homer drops his Nikon over the edge of the cliff at Half Dome, in Yosemite National Park. This…

A: Time taken to reach the ground (t) = 14.8 seconds initial speed (u) = 0 m/s

Q: Where should he sit to get the best view of the movie, if the lower end of the screen is 4 ft. and…

A: Analyze the following figure. For the best view, the angle θ should be maximum. From triangle AOC,…

Q: Determine focal length and magnification given radius of curvature, distance of object and image.

A:

Q: briefly Distinguish between virtual and real images

A: Optical image: It's apparent formation of an object, through phenomenon like reflection &…

Q: If we shine a ray down from the air above into the glass at an angle of 7.2 degrees from the…

A:

Q: What is magnification? Write its formula of calculation.

A: Magnification is defined as the ratio of image height to the object height.

Q: Name two factors which affect the critical angle for a given pair of media. State how do factors…

A: Factors affecting the critical angle for the pair of media are:(i) colour or wavelength of…

Q: Arthur Podd's method of fishing involves spearing the fish while standing on the shore. The actual…

A:

Q: For a 1.8 meter tall person standing L meters from a plane mirror to see their entire body , it must…

A: For a plane mirror,  Distance of image from the mirror in opposite side of object = distance of…

Q: 3. Explain the difference in time taken for light and sound to travel the same distance. Key words -…

A: Given data- speed of sound in air Vsound=343 m/s speed of light Vlight=3 × 108 m/s both are traveled…

Q: Describe the path of a light ray through a prism or lens.

A: Light ray through the prism and lens

Q: Measure your near point by bringing this page up to the closest distance at which the image is still…

A: A normal human eye has the near point (N) of about 25 cm and ideally the far point (F) of infinity.…

Q: University students celebrate their graduation with a trip to the sea. One of them decides to go…

A:

Q: Describe an interaction among two astronomical objects?

A: Gravitational force acts between two objects having mass and it always acts along the line joining…

Q: You measure an object distance of 0.3 m and an image distance of 0.15. Will the image be larger or…

A:

Q: What happens to the image distance in the eye when we increase the distance of an object from the…

A: The image distance in the eye does not change if the distance of an object from the eye is…

Q: horizontal, parallel with the ground). [I can't find a decent picture of this on the internet so ask…

A:

Q: Explain plain mirror image formation.

A: In plane mirror image distance is equal to object distance. The height of the image and object will…

Q: The vertical distance between eye level and the ground for a certain swimmer, who is standing…

A:

Q: Define the process of color subtraction.

A:

Q: Compare and contrast spherical aberration and chromatic aberration. When does each occur?

A: Question to answer :Compare and contrast spherical aberration and chromatic aberration. When does…

Q: Fine primary and secondary focus of a concave lens.

A: The point where all rays first enter the lens and parallel rays are brought to a focus is called the…

Q: Define theterm power of a lens. In what unit it is expressed?

A:

Q: Define the term nearsightedness.

A: Nearsightedness otherwise known as Myopia is a condition of defective vision. In this case image is…

Q: In the diagram below, label the following: the lens as either concave or convex focal point light…

A: 2-Convex lens  It is shapes similar to convex lens

Q: Essay Type. What factor indicates if an image is enlarge or diminished?

A: Images formed during reflection by mirrors and refraction through lenses can be enlarged or…

Q: 4. Write the standard form. (a) Speed of light in a vacuum = 298 000 000km/s (b) One light year = 10…

A: In standard form, a number is written in form of a×10n, where 1≤ a ≤ 10.

Q: 1- A 4.00-cm tall light bulb is placed a distance of 45.7 cm from a double convex lens having a…

A: