Practice questions
88551 published questions with worked solutions.
- If m arithmetic means (A. Ms) and three geometric means (G. Ms) are inserted between 3 and 243 such that 4^ th A.M. is equal to...
- The total number of 3-digit numbers, whose sum of digits is 10, is .................... .
- Let a plane P contain two lines r = i + ( i + j ), R and r =- j + ( j - k ), R. If Q ( , , ) is the foot of the perpendicular...
- A light planet is revolving around a massive star in a circular orbit of radius R with a period of revolution T. If the force of...
- Conductivity of a photodiode starts changing only if the wavelength of incident light is less than 660 nm. The band gap of...Not in JEE Advanced syllabus
- A diatomic gas (γ = 1.4) does 200 J of work when it is expanded isobarically. The heat given to the gas in the process is:
- A cricket player catches a ball of mass 120 g moving with 25 m/s speed. If the catching process is completed in 0.1 s, then the...
- A microwave of wavelength 2.0 cm falls normally on a slit of width 4.0 cm. The angular spread of the central maxima of the...
- From the statements given below: (A) The angular momentum of an electron in n^ th orbit is an integral multiple of ℏ. (B) Nuclear...
- Train A is moving along two parallel rail tracks towards north with speed 72 km/h and train B is moving towards south with speed...
- If frequency of electromagnetic wave is 60 MHz and it travels in air along z direction then the corresponding electric and...
- A body of mass 4 kg experiences two forces F_1 = 5 i + 8 j + 7 k and F_2 = 3 i - 4 j - 3 k. The acceleration acting on the body...
- Match List-I with List-II. List-I (Number): (A) 1001 (B) 010.1 (C) 100.100 (D) 0.0010010 List-II (Significant figure): (I) 3 (II)...
- If the root mean square velocity of hydrogen molecule at a given temperature and pressure is 2 km/s, the root mean square...
- In a metre-bridge when a resistance in the left gap is 2Ω and unknown resistance in the right gap, the balance length is found to...
- A transformer has an efficiency of 80% and works at 10 V and 4 kW. If the secondary voltage is 240 V, then the current in the...
- A uniform rod AB of mass 2 kg and length 30 cm at rest on a smooth horizontal surface. An impulse of force 0.2 Ns is applied to...
- Suppose a uniformly charged wall provides a uniform electric field of 2 10^4 N/C normally. A charged particle of mass 2 g being...
- One end of a metal wire is fixed to a ceiling and a load of 2 kg hangs from the other end. A similar wire is attached to the...
- A particle initially at rest starts moving from reference point x = 0 along x-axis, with velocity v that varies as v = 4 x m/s....