Day 107: JEE Mains Physics
5 questions. Try each one first, then open its answer.
Question 1
Work, Energy and Power. Asked 2 times: 2021 Paper 22*, 2021 Paper 23 (* = numbers or wording changed that year) See all 2 times it was asked
16A block moving horizontally on a smooth surface with a speed of splits into two parts with masses in the ratio of 1:2. If the smaller part moves at in the same direction, then the fractional change in kinetic energy is:Tap an option to check your answer.
Question 2
Thermodynamics. Asked 2 times: 2021 Paper 15*, 2021 Paper 22 (* = numbers or wording changed that year) See all 2 times it was asked
4A reversible engine has an efficiency of . If the temperature of the sink is reduced by , its efficiency becomes double. Calculate the temperature of the sink:Tap an option to check your answer.
Question 3
Semiconductor Electronics. Asked 2 times: 2021 Paper 10, 2021 Paper 21 See all 2 times it was asked
3For a transistor and are given as and . Then the correct relation between and will be:Tap an option to check your answer.
Question 4
Current Electricity. Asked 2 times: 2021 Paper 14*, 2021 Paper 19 (* = numbers or wording changed that year) See all 2 times it was asked
15An electric bulb of 500 watt at 100 volt is used in a circuit having a supply. Calculate the resistance to be connected in series with the bulb so that the power delivered by the bulb is .Tap an option to check your answer.
Question 5
Wave Optics. Asked 2 times: 2021 Paper 2, 2021 Paper 16 See all 2 times it was asked
13In a YDSE setup, orange light is replaced by blue light. Then,Tap an option to check your answer.