The refractive indices of kerosene, turpentine and water are 1.44, 1.47 and 1.33, respectively. Light will have a maximum speed in:
Important Questions on Physics
Consider the following statements concerning X-rays:
They produce heat when absorbed by matter.
They are generated when fast-moving electrons strike a metal target.
They can penetrate through a thin sheet of aluminium.
Which of the statements given above are correct?
Consider the following statements:
1. Horsepower is a bigger unit of power than a kilowatt.
2. One thousand crore is equal to .
3. One acre is slightly greater than square metres.
Which of the statement(s) given above is/are correct?
Match the following:
| A. Movement of water and minerals from earth to leaves of plants through roots. | 1. Bernoulli's principle |
| B. Lift of an aeroplane during its flight | 2. Capillary action |
| C. Formation of a star in the universe | 3. Surface tension |
| D. Cleaning action of soap | 4. Gravitational force |
Consider the following statements regarding a motor car battery:
The voltage is usually
. The electrolyte used is hydrochloric acid.
Electrodes are lead and copper.
Capacity is expressed in ampere-hour.
Which of the above statements are correct?
Consider the following statements:
The fog during the winter season is more on the day when:
1. Sky is clear.
2. Sky is cloudy.
3. Wind is blowing.
Which of the statements given above is/are correct?
