Red light differs from blue light as they have:
The time period of a simple pendulum is given by T = 2 π √ l/g .The measured value of the length of pendulum is 10 cm known to a 1mm accuracy. The time for 200 oscillations of the pendulum is found to be 100 second using a clock of 1s resolution. The percentage accuracy in the determination of ‘g’ using this pendulum is ‘x’. The value of ‘x’ to the nearest integer is:-
28
Sep
The time period of a simple pendulum is given by T = 2 π √ l/g .The measured value of the length of pendulum is 10 cm known to a 1mm accuracy. The time for 200 oscillations of the pendulum is found to be 100 second using a clock of 1s resolution. The percentage accuracy [...]
A thin circular ring of mass M and radius r is rotating about its axis with an angular speed ω. Two particles having mass m each are now attached at diametrically opposite points. The angular speed of the ring will become :
28
Sep
A thin circular ring of mass M and radius r is rotating about its axis with an angular speed ω. Two particles having mass m each are now attached at diametrically opposite points. The angular speed of the ring will become : Red light differs from blue light as they have: September 28, 2021 Category: [...]
An oil drop of radius 2 mm with a density 3g cm^–3 is held stationary under a constant electric field 3.55 × 10^5 V m^–1 in the Millikan’s oil drop experiment. What is the number of excess electrons that the oil drop will possess ? (consider g = 9.81 m/s^2)
28
Sep
An oil drop of radius 2 mm with a density 3g cm^–3 is held stationary under a constant electric field 3.55 × 10^5 V m^–1 in the Millikan’s oil drop experiment. What is the number of excess electrons that the oil drop will possess ? (consider g = 9.81 m/s^2) Red light differs from blue [...]
A 2 μF capacitor C1 is first charged to a potential difference of 10 V using a battery. Then the battery is removed and the capacitor is connected to an uncharged capacitor C2 of 8μF. The charge in C2 on equilibrium condition is……….μC. (Round off to the Nearest Integer)
28
Sep
A 2 μF capacitor C1 is first charged to a potential difference of 10 V using a battery. Then the battery is removed and the capacitor is connected to an uncharged capacitor C2 of 8μF. The charge in C2 on equilibrium condition is……….μC. (Round off to the Nearest Integer) Red light differs from blue light [...]
The image of an object placed in air formed by a convex refracting surface is at a distance of 10 m behind the surface. The image is real and is at 2^rd/3 of the distance of the object from the surface. The wavelength of light inside the surface is 2/3 times the wavelength in air. The radius of the curved surface is x/13 m. The value of ‘x’ is ___________.
28
Sep
The image of an object placed in air formed by a convex refracting surface is at a distance of 10 m behind the surface. The image is real and is at 2^rd/3 of the distance of the object from the surface. The wavelength of light inside the surface is 2/3 times the wavelength in air. [...]
The electric field in a region is given by → E = 2/5 E 0 ^ i + 3/5 E 0 ^ j with E0 = 4.0 × 10^3 N/C .The flux of this field through a rectangular surface area 0.4 m^2 parallel to the Y – Z plane is……….Nm^2C^–1
28
Sep
The electric field in a region is given by → E = 2/5 E 0 ^ i + 3/5 E 0 ^ j with E0 = 4.0 × 10^3 N/C .The flux of this field through a rectangular surface area 0.4 m^2 parallel to the Y – Z plane is……….Nm^2C^–1 Red light differs from blue [...]
The electric field intensity produced by the radiation coming from a 100 W bulb at a distance of 3m is E. The electric field intensity produced by the radiation coming from 60 W at the same distance is √ x/5 E. where the value of x =………..
28
Sep
The electric field intensity produced by the radiation coming from a 100 W bulb at a distance of 3m is E. The electric field intensity produced by the radiation coming from 60 W at the same distance is √ x/5 E. where the value of x =……….. Red light differs from blue light as they [...]
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 × 10^8 t) and transmitted through an antenna. What will be the bandwidth of the modulated signal ?
28
Sep
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 × 10^8 t) and transmitted through an antenna. What will be the bandwidth of the modulated signal ? Red light differs from blue light as they have: September 28, 2021 Category: JEE [...]
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 and fro through a total distance of 6 cm. What will be the mathematical expression of this travelling wave ?
28
Sep
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 and fro through a total distance of 6 cm. What will be the mathematical expression of this travelling wave ? Red light differs from blue light as they have: September [...]
A block of mass 1 kg attached to a spring is made to oscillate with an initial amplitude of 12 cm. After 2 minutes the amplitude decreases to 6 cm. Determine the value of the damping constant for this motion. (take In 2 = 0.693)
28
Sep
A block of mass 1 kg attached to a spring is made to oscillate with an initial amplitude of 12 cm. After 2 minutes the amplitude decreases to 6 cm. Determine the value of the damping constant for this motion. (take In 2 = 0.693) Red light differs from blue light as they have: September [...]