A person stands at the middle point of a wooden ladder which starts slipping between a vertical wall and the floor of a room, while continuing to remain in a vertical plane. The path traced by a person standing at the middle point of the slipping ladder is :

For which one of the following is capillarity not the only reason?

Consider the follwing statements with reference to X-rays :

1. They produce heat when absorbed by matter

2. They are generated when fast moving electrons strike a metal target

3. They can penetrate through a thin sheet of aluminium

Which of the statements given above are correct?

Which one of the following statements is correct ? 

A slab of ice kept in a room :

A body lying at rest suddenly breaks into two parts of equal masses which start moving. The two parts will move in :

Consider the following statements :

1.  Horsepower is a bigger unit of power than kilowatt

2.  One thousand crore is equal to 

3.  One acre is slightly greater than 5000 square metres

Which of the statements given above is/are correct?

Match the following :

Barium in a suitable form is administered to patients before an X-ray examination of the stomach, because :

Consider the following statements regarding a motor car battery :

1. The voltage is usually 12 V

2. Electrolyte used is hydrochloric acid

3. Electrodes are lead and copper

4. Capacity is expressed in ampere-hour

Which of the above statements are correct?

Consider the following statements :

The fog during 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?