Tiêu đề [Final Answer Keys with Solutions] AYJR 2024 (April) – Evening Shift.pdf ✅

Q1 The rms speed of oxygen at room temperature is about . The rms speed of hydrogen at the same temperature is about (1) (2) (3) (4) Q2 One drop of soap bubble of diameter breaks into 27 drops having surface tension . The change in surface energy is (1) (2) (3) (4) Q3 Consider a monochromatic linear source of light which is placed at a distance of from a very small metal plate. Due to photoelectric effect electrons are ejected at rate per second and it is found that maximum kinetic energy of photoelectron is . If source is brought closer to a distance , the rate of emission and the maximum kinetic energy of photoelectron become nearly (1) (2) (3) (4) Q4 AYJR 2024 (April) – Evening Shift Questions with Answer Keys Are You JEE Ready (AYJR) MathonGo www.mathongo.com 500 ms −1 125 m s −1 2000 m s −1 8000 m s −1 500 m s −1 D T 2πTD2 4πTD2 πTD2 8πTD2 r N K r 3 , 3K N 3 3N, 3K 3N, K 3N, K 3
The respective number of significant figures for the numbers 46.035, 0.0007 and are (1) (2) (3) (4) Q5 A conducting hollow spherical shell having an inner radius a and outer radius carries a net charge . If a point charge is placed at the centre of this sphere, the surface charge density of inner and outer surface will be - (1) (2) (3) (4) 0,0 Q6 Assertion: In series combination of electric bulbs, bulb of lower power emits more light than higher power bulb. Reason: The lower power bulb in series gets more current than the higher power bulb. (1) Both Assertion and Reason are true and the Reason is correct explanation of the Assertion. (2) Both Assertion and Reason are true but the Reason is not the correct explanation of the Assertion. (3) Assertion is true but the Reason is false. (4) Assertion is false but the Reason is true. Q7 AYJR 2024 (April) – Evening Shift Questions with Answer Keys Are You JEE Ready (AYJR) MathonGo www.mathongo.com 4.1 × 10 −3 5, 1, 2 5, 1, 5 5, 5, 2 4, 4, 2 b Q q , −q 4πa 2 −q+Q 4πb 2 , q 4πa 2 q+Q 4πb 2 , −q 4πa 2 q+Q 4πb 2
The current through the battery in the given circuit will be (1) (2) (3) (4) Q8 An ammeter is obtained by shunting a galvanometer with a resistance. The additional shunt required to double the range is (1) (2) (3) (4) Q9 In the figure, three blocks and of mass each, have acceleration and respectively. and are external forces of magnitude and respectively then AYJR 2024 (April) – Evening Shift Questions with Answer Keys Are You JEE Ready (AYJR) MathonGo www.mathongo.com A 38 9 A 37 7 4 A 5 A 30Ω 30Ω 15Ω 10Ω 5Ω 30Ω A, B C m a1 , a2 a3 F1 F2 4mg 3mg
(1) (2) (3) (4) Q10 The current flowing through the battery connected with infinite network as shown in the figure is (1) (2) (3) (4) Q11 The rms value of electric field at a distance from a source of electromagnetic wave of power is ( : Permittivity of free space) (1) (2) (3) (4) Q12 AYJR 2024 (April) – Evening Shift Questions with Answer Keys Are You JEE Ready (AYJR) MathonGo www.mathongo.com a1 > a2 > a3 a1 = a2 = a3 a1 > a3 > a2 a1 < a3 < a2 5 A 10 A 2 A 4 A r P ε √ P 2πr 2cε √ P 4πr 2cε √ P 8πr 2cε √ 2P πr 2cε