An object of height 17.7 cm is placed 7.8 cm from a concave lens. What is the angular size of this object? a. -0.44 rad

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An Object Of Height 17 7 Cm Is Placed 7 8 Cm From A Concave Lens What Is The Angular Size Of This Object A 0 44 Rad 1 (31.3 KiB) Viewed 19 times

An Object Of Height 17 7 Cm Is Placed 7 8 Cm From A Concave Lens What Is The Angular Size Of This Object A 0 44 Rad 2 (37.82 KiB) Viewed 19 times

An Object Of Height 17 7 Cm Is Placed 7 8 Cm From A Concave Lens What Is The Angular Size Of This Object A 0 44 Rad 3 (46.85 KiB) Viewed 19 times

An object of height 17.7 cm is placed 7.8 cm from a concave lens. What is the angular size of this object? a. -0.44 rad b. -2.27 rad c. 17.7 rad d. 25.50 rad e. - 17.7 rad O f. 2.27 rad O g. 0.44 rad Oh. 4.54 rad
Red light leaves a Vacuum (cu medium) and enters a second medium. Which of the following second medium will result in the smallest angle of refraction? Select as many options as you deem correct. Note: Selecting an incorrect option may incur a penalty of -10% to -20% of the marks for each question, so be careful with the options you select. O a. Empty space b. Vacuum c. Air d. Diamond e. Water f. Glass
A violet ray of light leaves a medium with refractive index of 4.86 at an angle of 1.33 radians to the normal and enters a second a medium with refractive index of 25.11. At what angle to the normal will this ray travel in the second medium? a. 0.3782 radians b. 0.0945 radians c. 0.0189 radians d. 0.6921 radians e. 0.0021 radians O f. 0.1891 radians