Day 68: JEE Mains Physics
5 questions. Try each one first, then open its answer.
Question 1
Current Electricity. This type asked 3 times: 28 Jul 2022, 4 Apr 2024, 4 Apr 2025. This one: 4 Apr 2025 See all 3 of this type
77There are ' n ' number of identical electric bulbs, each is designed to draw a power p independently from the mains supply. They are now joined in series across the main supply. The total power drawn by the combination is:Tap an option to check your answer.
Question 2
Current Electricity. This type asked 3 times: 2021 Paper 19, 14 Jun 2022, 4 Apr 2025. This one: 4 Apr 2025 See all 3 of this type
81From the combination of resistors with resistance values and , which of the following combination is the best circuit to get an equivalent resistance of ?Tap an option to check your answer.
Question 3
Dual Nature of Radiation and Matter. This type asked 3 times: 30 Jan 2023, 30 Jan 2024, 4 Apr 2025. This one: 4 Apr 2025 See all 3 of this type
2A small mirror of mass is suspended by a massless thread of length . Then the small angle through which the thread will be deflected when a short pulse of laser of energy E falls normal on the mirror. ( speed of light in vacuum and acceleration due to gravity)Tap an option to check your answer.
Question 4
Gravitation. This type asked 3 times: 11 Apr 2023, 6 Apr 2024, 4 Apr 2025. This one: 4 Apr 2025 See all 3 of this type
14Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R . Assertion A : The kinetic energy needed to project a body of mass from earth surface to infinity is , where R is the radius of earth. Reason R : The maximum potential energy of a body is zero when it is projected to infinity from earth surface. In the light of the above statements, choose the correct answer from the option given belowTap an option to check your answer.
Question 5
Moving Charges and Magnetism. This type asked 3 times: 25 Jul 2022, 24 Jan 2025, 4 Apr 2025. This one: 4 Apr 2025 See all 3 of this type
96A particle of charge and mass is present in a strong magnetic field of 6.28 T . The particle is then fired perpendicular to magnetic field. The time required for the particle to return to original location for the first time is ms. ( )