UHS MDCAT 2019 PAPER (PART 18) 1. In relation λ T 1/2 = 0.693 , which quantity is represented by λ? Decay constant Wavelength Half life Activity 2. Path difference for the destructive interference can be written as: Δs= (n+ 1/3) λ/2 Δs= 2n ( λ ) Δs= n λ Δs= (2n+ 1) λ/2 3. If a light is emitted by a single source passes through two narrow slits 1.00 mm apart. The interference pattern is observed on a screen 200 cm away and the separation between the centers of adjacent bright fringes is 2.00 mm. What would be the wavelength of the light? 2 µm 1 nm 1 µm 2 pm 4. The sum of all forms of molecular energies (Kinetic and Potential) of a substance is termed as ? Absolute energy Internal energy Elastic energy Heat energy 5. Calculate the rate at which energy is transferred by 220 V mains supply which provides a current of 0.1 A to a LED? 22 kW 2.2 kW 2.2 W 22 W 6. A particle carrying a charge of 5e falls through a potential difference of 25V. What would be energy acquired by the particle in J. 125 × 1.6 × 10^-19 J 1.6 × 10^-19 J 125 J 125 × 10^-19 J 7. A copper wire has length L and cross-sectional A. Its resistance is R. If we halved the length and halved the diameter of wire then what will be the resistance of this wire? R 2R 4R 3R 8. Kirchhoff’s first law/rule corresponds to: Law of conservation of energy Law of conservation of momentum Law of conservation of mass Law of conservation of charge 9. Electric field between plates is E. If the distance strength at a point between oppositely charged plates is reduced to half , what will be the new value of electric intensity? E/2 4E E/4 2E 10. An object is moving along a circular path of radius 4m. What will be Its angular displacement if it moves 14m on this circular path? 5.0 radians 5.5 radians 4.5 radians 3.5 radians Loading … Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
in question no 10
the type of energy reduced by the enzymes for biological reactions to occur is called ACTIVATION ENERGY
at here the correct answer is active energy which is wrong
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