Measuring Devices & Scales

Which of the following is a vector quantity ?

A man is standing on a sensitive balance. If he inhales deeply, the reading of the balance –

What is the correct equation for finding the acceleration?

A bus covers the first half of a certain distance with speed $v_1$ and the second half with a speed $v_2$. The average speed during the whole journey is :

The working principle of a washing machine is :

As the train starts moving, the head of the passenger sitting inside leans backward because of –

It is difficult to walk on the ice than on the road because :

Consider the following statement and conclusions which can be drawn from it. Choose the correct conclusion. Statement: In starting a loaded cart, one has to push harder than to keep it moving. Conclusion:

Most of the sources of energy we use, represent stored solar energy. Which of the following is NOT ultimately derived from the Sun's energy?

In wind power, which form of energy is converted into electrical energy?

Non-conventional energy sources are those energy sources, that are -

Match List-I with List-II and choose the correct answer from the code given below- List-I (Energy Conversion) A. Light to electric B. Electric to sound C. Mass to heat D. Chemical to heat and light List-II (Device/Mechanism) 1. Car Braking 2. Nuclear reactor 3. Loudspeaker 4. Solar cell 5. Fuel combustion Code : A B C D

The ratio of kinetic energies of two bodies of same mass is 4 : 9, the ratio of their velocities will be

For every action there is an equal and opposite reaction. The law was given by :

The apparatus used to measure the intensity of light is known as -

Radar is used for :

The intensity of earthquakes is measured :

Which of the following is a seismometer device?

Match List-I with List-II and select the correct answer from the codes given below the lists : List-I List-II A. Earthquake 1. Ammeter B. Height 2. Seismograph C. Electric current 3. Altimeter D. Resistance 4. Ohm Code : A B C D

Match List-I with List-II and select the correct answer from the codes given below the lists : List - I List - II A. Anemometer 1. Earthquakes B. Seismograph 2. Atmospheric Pressure C. Barograph 3. Wind velocity D. Hygrometer 4. Humidity Code : A B C D

Which one of the following is not correctly matched :

Radioactivity is measured by –

Phonometer is used to measure which one of the following?

The apparatus used for detecting lie is known as –