A point object is kept near a plane mirror. The mirror starts moving away from the object with a speed of $4 c m / s$ . The velocity of the image is

8 c m / s, t o w a r d s t h e o b j e c t

No worries! We‘ve got your back. Try BYJU‘S free classes today!

8 c m / s, a w a y f r o m t h e o b j e c t

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

4 c m / s, t o w a r d s t h e o b j e c t

No worries! We‘ve got your back. Try BYJU‘S free classes today!

4 c m / s, a w a y f r o m t h e o b j e c t

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $8 c m / s, a w a y f r o m t h e o b j e c t$
We know, the velocity of the image is twice in magnitude as that of the mirror and in the same direction.
Mathematically,
$_{i} = 2_{m} W e h a v e,_{m} = 4 c m / s, a w a y f r o m t h e o b j e c t . H e n c e,_{i} = 8 c m / s, a w a y f r o m t h e o b j e c t .$

Suggest Corrections

Similar questions

Q. A point object is kept near a plane mirror. The mirror starts moving away from the object with a speed of

4 c m / s

. The velocity of the image is

Q. An object is moving with velocity v towards a stationary plane mirror. If mirror starts moving towards the object with speed v, the speed of the image of the object

Q. Assertion :Keeping a point object fixed, if a plane mirror is moved away from the object, the image will also move. Reason: In case of a plane mirror, distance of object and its image is equal from any point on the mirror.

Q. A plane mirror is placed in yz plane facing towards negative x axis. The mirror is moving parallel to y axis with a speed of 5 cm/s. A point object P is moving in front of the mirror with a velocity

3 c m / s ¯ i + 4 c m / s ¯ j + 5 c m / s ¯ k

. The velocity of image respect to mirror is :

An object O is kept 80 cm in front of a plane mirror M. If the mirror is moved 20 cm away from the object. Calculate the image shift from its previous position.

Join BYJU'S Learning Program

A point object is kept near a plane mirror. The mirror starts moving away from the object with a speed of 4cm/s. The velocity of the image is

The correct option is B 8cm/s,away from the objectWe know, the velocity of the image is twice in magnitude as that of the mirror and in the same direction. Mathematically, →vi=2→vmWe have,→vm=4cm/s,away from the object.Hence,→vi=8cm/s,away from the object.

A point object is kept near a plane mirror. The mirror starts moving away from the object with a speed of $4 c m / s$ . The velocity of the image is