Physics questions
20027 published questions with worked solutions.
- The volume V of an enclosure contains a mixture of three gases, 16 g of oxygen, 28 g of nitrogen and 44 g of carbon dioxide at...
- In thermodynamics, heat and work are :
- A conducting wire of length 'l', area of cross-section A and electric resistivity is connected between the terminals of a...
- Time period of a simple pendulum is T inside a lift when the lift is stationary. If the lift moves upwards with an acceleration...
- The stopping potential in the context of photoelectric effect depends on the following property of incident electromagnetic...
- A block of 200 g mass moves with a uniform speed in a horizontal circular groove, with vertical side walls of radius 20 cm. If...
- A fringe width of 6 mm was produced for two slits separated by 1 mm apart. The screen is placed 10 m away. The wavelength of...
- A sinusoidal voltage of peak value 250 V is applied to a series LCR circuit, in which R = 8 , L = 24 mH and C = 60 . The value of...
- The resistance R= V I , where V = (50 ± 2)V and I = (20 ± 0.2)A. The percentage error in R is 'x' %. The value of 'x' to the...
- A rubber ball is released from a height of 5 m above the floor. It bounces back repeatedly, always rising to 81 100 of the height...
- If one mole of the polyatomic gas is having two vibrational modes and is the ratio of molar specific heats for polyatomic gas ( =...
- A geostationary satellite is orbiting around an arbitary planet 'P' at a height of 11R above the surface of 'P' , R being the...
- A sound wave of frequency 245 Hz travels with the speed of 300 ms ^ -1 along the positive x-axis. Each point of the wave moves to...
- The velocity of a particle is v = v_0 + gt + Ft^2. Its position is x = 0 at t = 0; then its displacement after time (t = 1) is :
- A carrier signal C(t) = 25 sin(2.512 10^ 10 t) is amplitude modulated by a message signal m(t) = 5 sin(1.57 10^8t) and...Not in JEE or NEET syllabus
- Two particles A and B of equal masses are suspended from two massless springs of spring constants K_1 and K_2 respectively. If...
- Match List-I with List-II : List-I: (a) Phase difference between current and voltage in a purely resistive AC circuit (b) Phase...
- The atomic hydrogen emits a line spectrum consisting of various series. Which series of hydrogen atomic spectra is lying in the...
- Two identical photocathodes receive the light of frequencies f_1 and f_2 respectively. If the velocities of the photo-electrons...
- What happens to the inductive reactance and the current in a purely inductive circuit if the frequency is halved ?