A 0.5 kg ball moves at 12 m/s. What is its kinetic energy?, 144 J, 36 J, 6 J, 72 J, A 2 kg mass is raised 5 m. What gravitational potential energy is gained? (g = 10 m/s²), 20 J, 50 J, 10 J, 100 J, A machine does 600 J of work in 3 s. What is its power?, 200 W, 20 W, 180 W, 300 W, A wave has frequency 5 Hz and wavelength 4 m. What is its speed?, 20 m/s, 1.25 m/s, 40 m/s, 9 m/s, Which quantity remains constant when light passes from air into glass?, Direction, Speed, Frequency, Wavelength, An echo is heard 0.4 s after a shout. If speed of sound is 340 m/s, how far is the wall?, 68 m, 34 m, 136 m, 85 m, A current of 2 A flows through a resistor for 5 min. What charge passes?, 150 C, 300 C, 10 C, 600 C, A 12 V battery is connected to a 4 Ω resistor. What current flows?, 48 A, 0.33 A, 3 A, 8 A, Two resistors, 3 Ω and 6 Ω, are connected in series. What is the total resistance?, 2 Ω, 4.5 Ω, 9 Ω, 18 Ω, Two resistors, 6 Ω and 3 Ω, are connected in parallel. What is the total resistance?, 3 Ω, 9 Ω, 1 Ω, 2 Ω, A radioactive sample has a half-life of 4 days. What fraction remains after 8 days?, 3/4, 1/4, 1/2, 1/8, What is induced in a conductor when it cuts magnetic field lines?, Pressure, Upthrust, E.m.f., Density, A transformer has 200 primary turns and 50 secondary turns. If primary voltage is 240 V, what is the secondary voltage?, 960 V, 60 V, 120 V, 190 V, Which electromagnetic wave has the highest frequency?, Radio waves, Microwaves, Infrared, Gamma rays, Which electromagnetic wave is used in remote controls?, Gamma rays, X-rays, Ultraviolet, Infrared, A convex mirror always forms an image that is:, Same size, Highly magnified, Real inverted, Virtual upright, The focal length of a lens is 20 cm. What is its power?, 0.2 D, 2.5 D, 5 D, 20 D, Which colour of surface is the best emitter of heat radiation?, Shiny silver, Dull black, Clear glass, Bright white, How much heat is needed to raise a 2 kg mass through 10°C if its specific heat capacity is 4200 J/kg°C?, 84000 J, 21000 J, 42000 J, 8400 J, A gas occupies 200 cm³ at 300 K. What volume will it occupy at 450 K if pressure is constant?, 150 cm³, 250 cm³, 600 cm³, 300 cm³, The pressure in a gas increases when its volume decreases at constant temperature. Which law explains this?, Hooke's law, Boyle's law, Ohm's law, Lenz's law, A body weighs 50 N in air and 30 N in water. What is the upthrust?, 20 N, 50 N, 80 N, 30 N, A liquid exerts pressure of 2000 Pa at a point. If the area is 0.5 m², what force acts?, 4000 N, 2000 N, 500 N, 1000 N, A 60 W lamp runs for 2 h. How much energy does it use?, 300 Wh, 120 Wh, 30 Wh, 62 Wh, An electric iron is rated 1000 W, 250 V. What current does it draw?, 25 A, 250 A, 4 A, 0.25 A

Vector Vault

tomonidan
Chop etish
qo'shib qo'yish

Ilg'orlar ro'yxati

Vizual uslub

Moslamalar

AI Enhanced: Ushbu faoliyat AI tomonidan yaratilgan kontentni o'z ichiga oladi. Ko'proq o'rganing.

Namunani almashtirish

Tahrirlashni davom ettirish: ?