Question

Can you answer the multiple choice all 1-7?

The focal length of a converging leas is determined through image formation Assuming an object distance of 105 cm and an image distance of 10 cm. what is the focal length of this lens? 5 A) infinity B) 11 cm C)9.13cm D)0.1095mm A light ray traveling in air is incident on the surface of a glass plate The light ray makes an angle of 32 degree with the normal to the surface, while in the glass it makes an angle of 17 degree. What is the refractive index of the glass? (Assume the refractive index of air is 1.) 5 A) 1.81 B) 1.1 C) 0.55 D) 1.49 If the speed of light changes to 60% of its actual value (3 times 10^2 m/s) entering from air is the refractive index of that medium with respect to air. 5 A) 0.2 B) 1.67 C) 2.0 D) Can't be determined from the information given. When the speed at which a conductor is moved through a magnetic field is decreased the induced voltage 5 A) Remains constant. B) Increases C) Decreases. D) Reaches to zero. Let's consider that an inductor is connected to a galvanometer. If magnetic material is inserted into the inductor there will be a deflection m the galvanometer. A) True. B) False In young double slit diffraction experiment wavelength of incident beams that is illuminating the slits should be A) zero B) different C) same D) opposite If we switch from red laser(lambda = 670 nm) to green laser (lambda = 532nm) in Young's double slit diffraction experiment then A) Separation between the fringes increased. B) Position of Principle maxima (m= 0) changed by 138 nm C Separation between fringes decreased D) All of the above are true

Answer 1

2 う 2 .13 cm 0