Question

16 ln the figure, the thin lens forms real image of the object 94.0 cam from the object. What the focal length of the lens? 16 Object 9.70 mm 35.0 cm Thin Lens A) 22.0 cm B) 25.5 cm C) 27.5 cm D) 55.8 cm E) 86.0 cm 17) Light from a monochromatic source shines through a double slit onto a screen 5.00 m away The slits are 0.180 mm apart. The dark bands on the screen are measured to be 1.70 cm apart What is the wavelength of the incident light? 17 A) 457 nmm B) 306 nm C) 392 nm D) 612 nm E) 784 nmm 18) Coherent sources A and B emit electromagnetic waves with wavelength 2.00 cm. Point P is 4.86 m from A and 5.24 m from B. What is the phase difference at P between these two waves? 18 A) 86 radians B) 119 radians C) 243 radians D) 524 radians E) None of the above 19) Monochromatic light is incident on a grating that is 75 mm wide and ruled with 50,000 lines. The second-order maximum is seen at 32.5°. What is the wavelength of the incident light? 19 A) 202 nm B) 403 nm C) 452 nm D) 605 nm E) 806 nm

Answer 1

Objet 359yS Ото Answer