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The first factor length f1 for refraction at a spherical surface is defined as the value of u corresponding to v = infinity (as shown ) with refractive indices of two mediums, as n1 and n2. The second focal length f2 is defined as value of v for u = infinity.
12
Sep
The first factor length f1 for refraction at a spherical surface is defined as the value of u corresponding to v = infinity (as shown ) with refractive indices of two mediums, as n1 and n2. The second focal length f2 is defined as value of v for u = infinity. as n1 and n2. [...]
The observer O sees the distance AB as infinitely large. If refractive index of liquid is mu1 and that of glass is mu2, then mu1/mu2 is
12
Sep
The observer O sees the distance AB as infinitely large. If refractive index of liquid is mu1 and that of glass is mu2, then mu1/mu2 is The observer O sees the distance AB as infinitely large. If refractive index of liquid is mu1 and that of glass is mu2 then mu1/mu2 is September 12, 2020 [...]
A 5 kg shell kept at rest suddenly splits up into three parts. If two parts of mass 2 kg each are found flying due north and east with velocity 5 m/s each, what is the velocity of third part after explosion ?
11
Sep
A 5 kg shell kept at rest suddenly splits up into three parts. If two parts of mass 2 kg each are found flying due north and east with velocity 5 m/s each, what is the velocity of third part after explosion ? A 5 kg shell kept at rest suddenly splits up into three [...]
Two ice skaters A and B approach each other at right angles. Skater A has a mass 30kg and velocity 1m/s skater B has a mass 20kg and velocity 2m/s. They meet and cling together. Their final velocity of the couple is:
11
Sep
Two ice skaters A and B approach each other at right angles. Skater A has a mass 30kg and velocity 1m/s skater B has a mass 20kg and velocity 2m/s. They meet and cling together. Their final velocity of the couple is: The position-time graph of a body of mass 2 kg is as shown [...]
A 100 kg gun fires a ball of 1 kg horizontally from a cliff of height 500m. It falls on the ground at a distance of 400 m from the bottom of the cliff. the recoil velocity of the gun is ( Take g = 10ms^−2)
11
Sep
A 100 kg gun fires a ball of 1 kg horizontally from a cliff of height 500m. It falls on the ground at a distance of 400 m from the bottom of the cliff. the recoil velocity of the gun is ( Take g = 10ms^−2) The tension in the string in the pulley system [...]
The position-time graph of a body of mass 2 kg is as shown in figure. What is the impulse on the body at t=4 s ?
11
Sep
The position-time graph of a body of mass 2 kg is as shown in figure. What is the impulse on the body at t=4 s ? The position-time graph of a body of mass 2 kg is as shown in figure. What is the impulse on the body at t=4 s ? September 11, 2020 [...]
A girl riding a bicycle along a straight road with a speed of 5 m s^–1 throws a stone of mass 0.5 kg which has a speed of 15 m s^–1 with respect to the ground along her direction of motion. The mass of the girl and bicycle is 50 kg. What is the change in speed of the bicycle ?
11
Sep
A girl riding a bicycle along a straight road with a speed of 5 m s^–1 throws a stone of mass 0.5 kg which has a speed of 15 m s^–1 with respect to the ground along her direction of motion. The mass of the girl and bicycle is 50 kg. What is the change [...]
Two billiard balls A and B, each of mass 50 kg and moving in opposite direction with speed of 5ms^−1 each, collide and rebound with the same speed. If the collision lasts for 10^−3s, which of the following statements are true?
11
Sep
Two billiard balls A and B, each of mass 50 kg and moving in opposite direction with speed of 5ms^−1 each, collide and rebound with the same speed. If the collision lasts for 10^−3s, which of the following statements are true? collide and rebound with the same speed. If the collision lasts for 10^−3s each [...]
A body of mass 0.05kg is observed to fall with an acceleration of 9.5ms^-2. The opposing force of air on the body is . [take g = 9.8 ms^-2]
11
Sep
A body of mass 0.05kg is observed to fall with an acceleration of 9.5ms^-2. The opposing force of air on the body is . [take g = 9.8 ms^-2] A body of mass 0.05kg is observed to fall with an acceleration of 9.5ms^-2. The opposing force of air on the body is . [take g [...]
A block of mass 10kg is moving horizontally with a speed of 1.5ms^−1 on a smooth plane. If a constant vertical force 10N acts on it, the displacement of the block from the point of application of the force at the end of 4s is
11
Sep
A block of mass 10kg is moving horizontally with a speed of 1.5ms^−1 on a smooth plane. If a constant vertical force 10N acts on it, the displacement of the block from the point of application of the force at the end of 4s is A block of mass 10kg is moving horizontally with a [...]