JEE Mains Physics 2002-2019 Solved Video Solutions
A tennis ball is released from a height h and after freely falling on a wooden floor it rebounds and reaches height h/2. The velocity versus height of the ball during its motion may be represented graphically by (graph are drawn schematically and on not to scale)
18
Sep
A tennis ball is released from a height h and after freely falling on a wooden floor it rebounds and reaches height h/2. The velocity versus height of the ball during its motion may be represented graphically by (graph are drawn schematically and on not to scale) A balloon filled with helium (32°C and 1.7 [...]
For a transverse wave travelling along a straight line, the distance between two peaks (crests) is 5 m, while the distance between one crest and one trough is 1.5 m. The possible wavelengths (in m) of the waves are
18
Sep
For a transverse wave travelling along a straight line, the distance between two peaks (crests) is 5 m, while the distance between one crest and one trough is 1.5 m. The possible wavelengths (in m) of the waves are For a transverse wave travelling along a straight line the distance between two peaks (crests) is [...]
Blocks of masses m, 2m, 4m and 8m are arranged in a line on a frictionless floor. Another block of mass m, moving with speed v along the same line (see figure) collides with mass m in perfectly inelastic manner. All the subsequent collisions are also perfectly inelastic. By the time the last block of mass 8 m starts moving the total energy loss is p% of the original energy. Value of ‘p’ is close to
18
Sep
Blocks of masses m, 2m, 4m and 8m are arranged in a line on a frictionless floor. Another block of mass m, moving with speed v along the same line (see figure) collides with mass m in perfectly inelastic manner. All the subsequent collisions are also perfectly inelastic. By the time the last block of [...]
Dimensional formula for thermal conductivity is (here K denotes the temperature)
18
Sep
Dimensional formula for thermal conductivity is (here K denotes the temperature) Dimensional formula for thermal conductivity is (here K denotes the temperature) September 18, 2021 Category: JEE Mains Physics 2002-2019 Solved Video Solutions , Practice Set 1 ,
Particle A of mass mA = m/2 moving along the x-axis with velocity v0 collides elastically with another particle B at rest having mass mB = m/3. If both particles move along the x-axis after the collision, the change Δλ in de-Broglie wavelength of particle A, in terms of its de-Broglie wavelength (λ0) before collision is
18
Sep
Particle A of mass mA = m/2 moving along the x-axis with velocity v0 collides elastically with another particle B at rest having mass mB = m/3. If both particles move along the x-axis after the collision, the change Δλ in de-Broglie wavelength of particle A, in terms of its de-Broglie wavelength (λ0) before collision [...]
A air bubble of radius 1 cm in water has an upward acceleration 9.8 cm s^–2. The density of water is 1 gm cm^–3 and water offers negligible drag force on the bubble. The mass of the bubble is (g = 980 cm/s^2)
18
Sep
A air bubble of radius 1 cm in water has an upward acceleration 9.8 cm s^–2. The density of water is 1 gm cm^–3 and water offers negligible drag force on the bubble. The mass of the bubble is (g = 980 cm/s^2) A balloon filled with helium (32°C and 1.7 atm.) bursts. Immediately afterwards [...]
Take the breakdown voltage of the zener diode used in the given circuit as 6 V. For the input voltage shown in figure below, the time variation of the output voltage is (Graphs drawn are schematic and not to scale)
18
Sep
Take the breakdown voltage of the zener diode used in the given circuit as 6 V. For the input voltage shown in figure below, the time variation of the output voltage is (Graphs drawn are schematic and not to scale) Take the breakdown voltage of the zener diode used in the given circuit as 6 [...]
Two charged thin infinite plane sheets of uniform surface charge density σ+ and σ–, where |σ+| > |σ–|, intersect at right angle. Which of the following best represents the electric field lines for this system?
18
Sep
Two charged thin infinite plane sheets of uniform surface charge density σ+ and σ–, where |σ+| > |σ–|, intersect at right angle. Which of the following best represents the electric field lines for this system? intersect at right angle. Which of the following best represents the electric field lines for this system? Two charged thin [...]
A small bar magnet is moved through a coil at constant speed from one end to the other. Which of the following series of observations will be seen on the galvanometer G attached across the coil? Three positions shown describe : (a) the magnet’s entry (b) magnet is completely inside and (c) magnet’s exit.
18
Sep
A small bar magnet is moved through a coil at constant speed from one end to the other. Which of the following series of observations will be seen on the galvanometer G attached across the coil? Three positions shown describe : (a) the magnet’s entry (b) magnet is completely inside and (c) magnet’s exit. A [...]
A small bar magnet placed with its axis at 30° with an external field of 0.06 T experiences a torque of 0.018 Nm. The minimum work required to rotate it from its stable to unstable equilibrium position is
18
Sep
A small bar magnet placed with its axis at 30° with an external field of 0.06 T experiences a torque of 0.018 Nm. The minimum work required to rotate it from its stable to unstable equilibrium position is A balloon filled with helium (32°C and 1.7 atm.) bursts. Immediately afterwards the expansion of helium can [...]