Day 152: JEE Mains Physics
5 questions. Try each one first, then open its answer.
Question 1
Units and Measurements. Asked once: 28 Jul 2022 (same type asked 7 times) See all 7 of this type
91Consider the efficiency of Carnot's engine is given by , where and are constants. If is temperature, is Boltzman constant, is angular displacement and has the dimensions of length. Then, choose the incorrect option.Tap an option to check your answer.
Question 2
Oscillations. Asked once: 12 Apr 2023 (same type asked 7 times) See all 7 of this type
14A particle is executing Simple Harmonic Motion (SHM). The ratio of potential energy and kinetic energy of the particle when its displacement is half of its amplitude will be:Tap an option to check your answer.
Question 3
Nuclei. Asked once: 29 Jan 2023 (same type asked 7 times) See all 7 of this type
11If a radioactive element having half-life of is undergoing beta decay, the fraction of radioactive element remains undecayed after . will beTap an option to check your answer.
Question 4
Thermodynamics. Asked once: 29 Jun 2022 (same type asked 7 times) See all 7 of this type
26. of heat is given to a heat engine and it rejects 225 cal. of heat. If source temperature is , then the temperature of sink will be .Question 5
Mechanical Properties of Fluids. Asked once: 21 Jan 2026 S1 (same type asked 6 times) See all 6 of this type
4Water flows through a horizontal tube as shown in the figure. The difference in height between the water columns in vertical tubes is 5 cm and the areas of cross-section at and are and respectively. The rate of flow will be . (take )Tap an option to check your answer.