Q2221.Match List-I with List-II and select the correct answer using the code given below the lists. List-I (a) Anemometer (b) Seismograph (c) Barograph (d) Hygrometer List-II 1. Earthquakes 2. Atmospheric Pressure 3. Wind velocity 4. Humidity Code (a) (b) (c) (d)
Correct answer: 3
Q2222.The working principle of a washing machine is
Correct answer: Centrifugation
Q2223.Which of the following is not a vector quantity?
Correct answer: Volume
Q2224.A simple machine helps a person in doing
Correct answer: The same amount of work with lesser force
Q2225.A man is standing on a sensitive balance. If he inhales deeply, the reading of the balance
Correct answer: Increases
Q2226.Which of the following is a vector quantity?
Correct answer: Displacement
Q2227.Which one of the following is a vector quantity?
Correct answer: Momentum
Q2228.Which physical quantity is represented by the ratio of momentum and velocity of the body?
Correct answer: Mass
Q2229.Force is the product of
Correct answer: Mass and acceleration
Q2230.If the number representing volume and surface area of a cube are equal, then the length of the edge of the cube in terms of the unit of measurement will be
Correct answer: 6
Q2231.Energy conservation means
Correct answer: Energy can neither be created nor destroyed
Q2232.The energy of wind is
Correct answer: Only kinetic
Q2233.In wind power, which form of energy is converted into electrical energy?
Correct answer: Kinetic energy
Q2234.As the train starts moving, the head of the passenger sitting inside leans backward because of
Correct answer: Inertia of Rest
Q2235.It is difficult to walk on the ice than on the road because
Correct answer: Ice has a lesser friction than the road
Q2236.A man jumped at a speed of 5 metre per second from a stationary boat and the boat moved off with the speed of 0.5 metre per second. How many times is the mass of the boat greater than that of the man?
Correct answer: 10 times
Q2237.A truck, a car and a motorcycle have equal kinetic energies. If equal, stopping forces are applied and they stop after travelling a distance of X, Y and Z respectively, then
Correct answer: X = Y = Z
Q2238.A person is sitting in a car which is at rest. The reaction from the road at each of the four wheels of the car is R. When the car runs on a straight level road, how will the reaction at either of the front wheels vary?
Correct answer: It will be less than R
Q2239.An oil tanker is partially filled with oil and moves forward on a level road with uniform acceleration. The free surface of oil, then
Correct answer: assumes parabolic curve
Q2240.What is the correct equation for finding the acceleration?
Correct answer: a = v u t −
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