A boy of height 1m 45 cm is standing in front of long mirror at a distance 2 m . From this information, fill up the following sentences:a)The distance between the boy and his image is----

A boy of height 1m 45 cm is standing in front of long mirror at a distance 2 m . From this information, fill up the following sentences:b)The height of the image is-----

A boy of height 1m 45 cm is standing in front of long mirror at a distance 2 m . From this information, fill up the following sentences:c) When the boy moves 1 m forward, the distance between her and her image is-----

An object place in front of a plane mirror is displaced by 0.4 m along a straight line at angle of 30^@ to mirror plane, the change in the distance between the object and its image is

An object of length 2.5 cm is placed at the principal axis of a concave mirror at a distance 1.5 f. The image height is

A boy stands straight in front of a mirror at a distance of 30 cm away from it. He sees his erect image whose height is (1/5)^(th) of his real height . The mirror he is using is

A source emitting sound of frequency 180 Hz is placed in front of a wall at a distance of 2 m from it. A detector is also placed in front of the wall at the same distance from it. Find the minimum distance between the source and the detector for which the detector detects a maximum of sound. Speed of sound in air =360ms^-1 .

Two poles of heights 6 m and 11 stand vertically on a plane ground. If the distance between their feet is 12 m, what is the distance between their tops ?

An object is initially at a distance of 100 cm from plane mirror. If the mirror approaches the object at a speed of 5 cm/s, then after 6 s the distance between the object and its images will be

If two objects are at a distance of d from each others. Then F=(Gm_(1)m_(2))/(d^(2)) If the distance between two bodies is 3d