The Physics category brings together a wide range of questions on fundamental topics such as mechanics, electricity, magnetism, thermodynamics, and optics. It’s designed to help learners test their knowledge, identify gaps, and build confidence for exams and competitive tests.
4 V is correct per The maximum kinetic energy of photoelect principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 13 Nuclei
one on which aluminium oxide film is formed. is correct per In electrolytic capacitors positive term principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 1 Electric Charges and Fields
Electric field lines are perpendicular to equipotential lines. is correct per Which of the following is true about equ principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 1 Electric Charges and Fields
2E 0 /π is correct per The average e.m.f. during the positive h principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 4 Moving Charges and Magnetism
(4î − 3ĵ) N is correct per A charge of 0.2 C moves with a velocity principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 3 Current Electricity
8.64 Å is correct per What will be the wavelength of electrons principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 1 Electric Charges and Fields
0.50 m is correct per A boy of height 1 m stands infront of a principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 9 Ray Optics and Optical Instruments
40 cm is correct per The radius of curvature of the curved su principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 9 Ray Optics and Optical Instruments
2.5 A is correct per A circuit element 'X' when connected to principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 4 Moving Charges and Magnetism
1.7 A is correct per A capacitor of capacitance 5μF is charge principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 1 Electric Charges and Fields
Both holes and electrons is correct per In a semiconductor, current conduction i principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 14 Semiconductor Electronics
Covalent bonds is correct per A semiconductor is formed by: principle; validated by standard physics law.
Ref: NCERT Physics Class 12 Chapter 14 Semiconductor Electronics
