Practice Set 1
A galaxy is moving away from the earth at a speed of 286 kms^–1. The shift in the wavelength of a red line at 630 nm is x × 10^–10 m. The value of x, to the nearest integer, is…… [Take the value of speed of light c, as 3 × 10^8 ms^–1]
29
Sep
A galaxy is moving away from the earth at a speed of 286 kms^–1. The shift in the wavelength of a red line at 630 nm is x × 10^–10 m. The value of x, to the nearest integer, is…… [Take the value of speed of light c, as 3 × 10^8 ms^–1] A galaxy [...]
Two wires of same length and thickness having specific resistances 6Ω cm and 3Ω cm respectively are connected in parallel. The effective resistivity is ρ Ω cm. The value of ρ, to the nearest integer, is……
29
Sep
Two wires of same length and thickness having specific resistances 6Ω cm and 3Ω cm respectively are connected in parallel. The effective resistivity is ρ Ω cm. The value of ρ, to the nearest integer, is…… is to the nearest integer Two wires of same length and thickness having specific resistances 6Ω cm and 3Ω [...]
Consider a 72 cm long wire AB as shown in the figure. The galvanometer jockey is placed at P on AB at a distance x cm from A. The galvanometer shows zero deflection. The value of x, to the nearest integer, is
29
Sep
Consider a 72 cm long wire AB as shown in the figure. The galvanometer jockey is placed at P on AB at a distance x cm from A. The galvanometer shows zero deflection. The value of x, to the nearest integer, is Consider a 72 cm long wire AB as shown in the figure. The [...]
An infinite number of point charges, each carrying 1 μC charge, are placed along the y-axis at y = 1 m, 2 m, 4 m, 8 m……………… The total force on a 1 C point charge, placed at the origin, is x × 10^3 N. The value of x, to the nearest integer, is……… [Take 14πε0 = 9 x 10^9 Nm^2/C^2]
29
Sep
An infinite number of point charges, each carrying 1 μC charge, are placed along the y-axis at y = 1 m, 2 m, 4 m, 8 m……………… The total force on a 1 C point charge, placed at the origin, is x × 10^3 N. The value of x, to the nearest integer, is……… [Take [...]
Tags:
2 m ,
4 m ,
8 m.................. The total force on a 1 C point charge ,
An infinite number of point charges ,
are placed along the y-axis at y = 1 m ,
each carrying 1 μC charge ,
is x × 10^3 N. The value of x ,
is......... [Take 14πε0 = 9 x 10^9 Nm^2/C^2] ,
placed at the origin ,
to the nearest integer ,
The radius of a sphere is measured to be (7.50 ± 0.85) cm. Suppose the percentage error in its volume is x. The value of x, to the nearest integer, is……..
29
Sep
The radius of a sphere is measured to be (7.50 ± 0.85) cm. Suppose the percentage error in its volume is x. The value of x, to the nearest integer, is…….. is The radius of a sphere is measured to be (7.50 ± 0.85) cm. Suppose the percentage error in its volume is x. The [...]
A TV transmission tower antenna is at a height of 20 m. Suppose that the receiving antenna is at. (i) ground level (ii) a height of 5 m. The increase in antenna range in case (ii) relative to case (i) is n%. The value of n, to the nearest integer, is .
29
Sep
A TV transmission tower antenna is at a height of 20 m. Suppose that the receiving antenna is at. (i) ground level (ii) a height of 5 m. The increase in antenna range in case (ii) relative to case (i) is n%. The value of n, to the nearest integer, is . The decay of [...]
The typical output characteristics curve for a transistor working in the common-emitter configuration is shown in the figure. The estimated current gain from the figure is
29
Sep
The typical output characteristics curve for a transistor working in the common-emitter configuration is shown in the figure. The estimated current gain from the figure is The typical output characteristics curve for a transistor working in the common-emitter configuration is shown in the figure. The estimated current gain from the figure is September 29, 2021 [...]
The projectile motion of a particle of mass 5 g is shown in the figure. The initial velocity of the particle is 5√2 ms^–1 and the air resistance is assumed to be negligible. The magnitude of the change in momentum between the points A and B is x × 10^–2 kgms–1. The value of x, to the nearest integer, is ……..
29
Sep
The projectile motion of a particle of mass 5 g is shown in the figure. The initial velocity of the particle is 5√2 ms^–1 and the air resistance is assumed to be negligible. The magnitude of the change in momentum between the points A and B is x × 10^–2 kgms–1. The value of x, [...]
A ball of mass 4 kg, moving with a velocity of 10 ms^–1, collides with a spring of length 8 m and force constant 100 Nm^–1. The length of the compressed spring is x m. The value of x, to the nearest integer, is……
29
Sep
A ball of mass 4 kg, moving with a velocity of 10 ms^–1, collides with a spring of length 8 m and force constant 100 Nm^–1. The length of the compressed spring is x m. The value of x, to the nearest integer, is…… A ball of mass 4 kg collides with a spring of [...]
The speed of electrons in a scanning electron microscope is 1 × 10^7 ms^–1. If the protons having the same speed are used instead of electrons, then the resolving power of scanning proton microscope will be changed by a factor of:
29
Sep
The speed of electrons in a scanning electron microscope is 1 × 10^7 ms^–1. If the protons having the same speed are used instead of electrons, then the resolving power of scanning proton microscope will be changed by a factor of: The speed of electrons in a scanning electron microscope is 1 × 10^7 ms^–1. [...]