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An object is placed at a distance of (8 cm) fr om a concave lens has a focal length (2 cm),Mention the properties of image fo r med

Calculate the actual speed of the car whose relative speed is (80 km/h) relative to an observer moving in opposite direction at a speed of (30 km/h)

A train moves at a speed (100 km/h), then it cover a distance of (40 km) within time .......... hours.

Mass is considered fr om… … physical quantity

The focal length of a lens It is the distance between the principal Focus a nd the optical centre of the lens .

A mirro r , always fo r ms a diminished image fo r the object.

Reproduction by spo r ogony occurs in bread mould Fungus

If the number of chromosomes in liver cells of a certain living o r ganism is (32) chromosomes then the number of chromosomes in ovum cell is.....

The optical piece which fo r ms laterally inverted (reversed) image a nd equal to the body is .......

A train moves at a speed (30 m/sec). a nd when the brakes is used it moves with a decelerating (3 m/sec2). Calculate the time taken to stop the train