Question

16) What are the four fundamental forces in nature? (PUT THEM RANGING FROM WEAKEST TO STRONGEST) 17) In the picture shown, draw where the light rays project? 2f f ++ f 2f 3f Circle the correct answer in the following a) Will the image be real or virtual? b) Will the image be upside down or upright? c) Will the image be enlarged or reduced

Answer 1

1. Gravitational force. 2. weak nuclear force. 3. Electromagnetie force. 4. Strong nuclear force. object at af f af 3f IMAGE a) Real b) upside down e) enlarged ) RE24 2 Ve 120V Power is given by P VP R 2 120 = 24 = 600 W CAns 19 L= 4x103H ; R = 2002; VE 30V; Paras a = 250 rad/s e Inductive reactance, Xe= Lue 4x103 x 250 - Impedance Z V R² + x2 V2002 +12 Z=2000025 2 CAns) & Cworent, I 늘 30 200.0025 0.149 A voltage across resistor, = IR = 0.149 x 200 R = 29.99V (Aus) Voltage across inductor [not capacitor Y = I xc = 0.149xi = 0.149 v (Ans) I Phase angle 'd' is given by tam a XL R tast ( 4 ) - tant (ago 0.296 (Ans) h) First quadrant

Circuit for qn 20 is not given.