• (a) Explain why the stability of a person against a toppling force is increased by spreading the legs as shown in Fig. 1.7. (b) Calculate the force required to topple a person of mass = 70 kg, standing with his feet spread 0.9 m apart as shown in Fig. 1.7. Assume the person does not slide and the weight of the person is equally distributed on both feet.

Q: I-16) Which is the most likely image corresponding to the FFT to the right? A B C D

A:

Q: Sunlight strikes the surface of a lake. A diver sees the Sun at an angle of 42° with respect to the…

A: (given) Refractive index of air (ni) = 1 Refractive index of water (nf) = 1.33 Angle of refraction…

Q: A submarine is 285 m horizontally from the shore of a freshwater lake and 111 m beneath the surface…

A:

Q: You have enrolled in a scuba diving class and while swimming under water in a nearby lake you look…

A:

Q: is the object distance for L2 in attached image positive or negative? Explain.

A: Given : A combination of convex lens and concave lens. Asked about the sign of object distance for…

Q: An underwater scuba diver sees the Sun at an apparent angle of 34.0° from the vertical. What is…

A: Given data  Apparent angle from the vertical ( θ2 ) = 34.0°    To find  The actual direction of sun…

Q: A person with 20/20 vision can see what an average individual can see on an eye chart when they are…

A:

Q: A boy floating on a pond watches a fish swim away from him as in the figure below. If the fish is…

A:

Q: A candle with Sem height is placed in front of a diverging lens. The object is 15 cm in front of the…

A:

Q: 7. Given |a| = 5 and |B| = 11 and the angle between them is 55°, a) Draw and label the resultant 3b…

A:

Q: A tank has a volume of 0.5 m³ and contains 10 kg of an ideal gas having a molecular weight 24. The…

A: Given:Volume of tank, V = 0.5 m3mass of the gas, m = 10 kgmolecular mass of the gas, m = 24…

Q: Which cues do we use to determine if an object is closer to us than an object that we are focusing…

A: Given : Choose the correct option.

Q: An object arrow 2 cm high is placed 20 cm from a converging lens of focal length of 10 cm. Find…

A: height of object arrow = 2 cm Object distance (d) = 20 cm focal length (f) = 10 cm A) Using lens…

Q: A diverging lens has a focal length of 12 cm.  A 5 cm object is placed 46 cm from the lens.…

A: Given data: Focal length of lens is, f=12 cm. Height of object is, ho=5 cm. Object distance is, u=46…

Q: A boy floating on a pond watches a fish swim away from him as in the figure below. If the fish is…

A:

Q: One mirror is vertical. The second mirror makes a 50 angle with the first mirror. A beam of light is…

A:

Q: As you sit in your parked car, you glance in the convex side mirror (radius of curvature 125 cm) and…

A:

Q: A boy floating on a pond watches a fish swim away from him as in the figure below. If the fish is…

A: let us assume that the maximum visible distance =d and the depth of the pond = h = 2.51m index of…

Q: Draw a ray diagram for the diverging lens with the object height of 4 cm at the distance of 8 cm…

A: Height of an object,Distance of an object,Focal length of diverging lens,

Q: A light ray passes through a glass lens, shown in cross section in the figure below. Find the angle…

A: Please follow the steps below.Explanation:

Q: Does the apparent depth of a tank of water change if viewed obliquely? If so, does the apparent…

A: Yes, the apparent depth of a tank of water changes if viewed obliquely.

Q: You have enrolled in a scuba diving class and while swimming under water in a nearby lake you look…

A:

Q: Your eye (diameter 2.5 cm) is able to focus the image of a tree on your retina. The tree is 18 m…

A:

Q: (8) A thin lens is made from material having an index of refraction of 1.65. The front surface of…

A: The focal length of the lens is calculated with lens makers formula .By substituting the radii of…

Q: D. 30-T 42 Find the critical angle of the glass prism.

A: Given:  (a) A glass filled with water (b) refractive index of water, n = 1.33  distance between…

Q: A man shines a flashlight from a boat into the water, illuminating a rock as in the figure below.…

A: We the relation for refraction, n1sinθ1=n2sinθ2

Q: The reflecting surfaces of two intersecting flat mirrors are at an angle of 59 ◦ , as shown in the…

A:

Q: Consider a lens shown schematically in the picture below and an object of height h, placed distance…

A:

Q: Goku, flying at an altitude of 210 m above the surface of the ocean, sees Vegeta below the surface…

A: We know that when we see from the above of the surface of the water we see a Vegeta below the…

Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.