Physics

20 chapters 515 solved questions 26 tests

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Chapters

1. 1 Physics and Measurement 17 Q · Test
2. 2 Kinematics 27 Q · Test
3. 3 Laws of Motion 17 Q · Test
4. 4 Work, Energy and Power 20 Q · Test
5. 5 Rotational Motion 28 Q · Test
6. 6 Gravitation 20 Q · Test
7. 7 Properties of Solids and Liquids 37 Q · Test
8. 8 Thermodynamics 15 Q · Test
9. 9 Kinetic Theory of Gases 14 Q · Test
10. 10 Oscillations and Waves 28 Q · Test
11. 11 Electrostatics 37 Q · Test
12. 12 Current Electricity 37 Q · Test
13. 13 Magnetic Effects of Current and Magnetism 33 Q · Test
14. 14 Electromagnetic Induction and Alternating Currents 34 Q · Test
15. 15 Electromagnetic Waves 17 Q · Test
16. 16 Optics 48 Q · Test
17. 17 Dual Nature of Matter and Radiation 22 Q · Test
18. 18 Atoms and Nuclei 27 Q · Test
19. 19 Electronic Devices 31 Q · Test
20. 20 Experimental Skills 6 Q · Test

Practice tests

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• Physics: Electrostatics – NEET practice test 2 Practice set · NEET · 18 questions · 18 min
• Physics: Experimental Skills – NEET practice test Practice set · NEET · 6 questions · 6 min
• Physics: Gravitation – NEET practice test Practice set · NEET · 20 questions · 20 min
• Physics: Kinematics – NEET practice test Practice set · NEET · 27 questions · 27 min

Top questions

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• A full wave rectifier circuit with diodes (D_1) and (D_2) is shown in the figure. If input supply voltage V_in = 220(100π t) volt, then at t = 15 msec Answer: 1. D₁ is forward biased, D₂ is reverse biased or 2. D₁ is reverse biased, D₂ is forward biased Key idea: in a centre-tapped full-wav... Diode as a rectifier 1 answer
• The intensity of transmitted light when a polaroid sheet, placed between two crossed polaroids at 22.5^° from the polarization axis of one of the polaroid, is (I_0 is the intensity of polarised light after passing through the first polaroid): Answer: 3. I₀/8 Key idea: apply Malus's law, I=I₀cos²θ , at each polaroid. The middle sheet is at 22.5^° to the first, and 90^°-22.5^°=67.5^... Polarization, Brewster's law, Polaroids 1 answer
• Two identical point masses P and Q, suspended from two separate massless springs of spring constants k_1 and k_2, respectively, oscillate vertically. If their maximum speeds are the same, the ratio (A_Q/A_P) of the amplitude A_Q of mass Q to the ampl… Answer: 4. √(k₁/k₂) Key idea: the maximum speed in SHM is v_max=Aω=A√(k/m) . Masses are identical and v_max is the same, so A_P√(k₁)=A_Q√(k₂... Energy in SHM 1 answer
• A pipe open at both ends has a fundamental frequency f in air. The pipe is now dipped vertically in a water drum to half of its length. The fundamental frequency of the air column is now equal to : Answer: 2. f Key idea: an open pipe of length L has fundamental f=v/2L ; a pipe closed at one end of length l has fundamental v/4l . Dipping... Standing waves in strings and organ pipes, harmonics 1 answer
• A physical quantity P is related to four observations a, b, c and d as follows:P = a^3b^2 / c√(d)The percentage errors of measurement in a, b, c and d are 1%, 3%, 2%, and 4% respectively. The percentage error in the quantity P is Answer: 3. 13% Key idea: for P=a³b²/csqrt d , the maximum percentage error is the sum of (power × percentage error) of each quantity. Δ P/P×... Least count, significant figures and errors in measurement 1 answer
• Two gases A and B are filled at the same pressure in separate cylinders with movable pistons of radius r_A and r_B, respectively. On supplying an equal amount of heat to both the systems reversibly under constant pressure, the pistons of gas A and B… Answer: 2. 3/4 Key idea: at constant pressure, Q=Δ U+W with W=pΔ V . The heat supplied and Δ U are the same for both gases, so W is equal. W... First law of thermodynamics 1 answer