This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
ScanSolve AI Answer
Here are the solutions to the questions: 3. The relationships between, velocity of light in air and velocity of light in a medium is given by The refractive index () of a medium is defined as the ratio of the speed of light in a vacuum (or approximately in air) to the speed of light in the medium. = velocity of light in airvelocity of light in the medium The correct option is B. 4. A ray of light from air to glass is incident at an angle 35°. Calculate the angle of refraction in the glass if the refractive index of glass is 1.50 Step 1: Identify the given values. Angle of incidence in air, _1 = 35^ Refractive index of air, n_1 = 1 (approximately) Refractive index of glass, n_2 = 1.50 Step 2: Apply Snell's Law. Snell's Law states n_1 _1 = n_2 _2. (1) (35^) = (1.50) _2 Step 3: Solve for the angle of refraction, _2. _2 = ((35^))/(1.50) _2 = (0.573576)/(1.50) _2 ≈ 0.382384 _2 = (0.382384) _2 ≈ 22.48^ Rounding to one decimal place, _2 ≈ 22.5^. The correct option is A. 5. The critical angle of a certain refracting material is 30°. Calculate the refractive index of the material. Step 1: Identify the given value. Critical angle, _c = 30^ Step 2: Use the formula for critical angle. The critical angle is related to the refractive index (n) by the formula: _c = (1)/(n) Step 3: Solve for the refractive index n. n = (1)/( _c) n = (1)/((30^)) n = (1)/(0.5) n = 2 The correct option is B. 6. Which diagram in Fig. 12.94 correctly shows a ray of light passing through a rectangular glass block? When light passes from a rarer medium (air) to a denser medium (glass), it bends towards the normal. When it passes from a denser medium (glass) to a rarer medium (air), it bends away from the normal. For a rectangular block, the emergent ray is parallel to the incident ray. Diagram A: The light ray bends towards the normal upon entering the glass and bends away from the normal upon exiting the glass. The emergent ray is parallel to the incident ray. This is correct. Diagram B: The light ray bends away* from the normal upon entering the glass, which is incorrect. Therefore, the correct diagram is A. Last free one today — make it count tomorrow, or type /upgrade for unlimited.