For a closer look when shaving: a plane mirror is used. a concave mirror is used. a convex mirror is used.

Plane mirror always forms an image of same size as that of object

Concave mirror can form a virtual image that is greater than the size of object

convex mirror will always form a virtual image that is smaller in size

So overall for closer look during shaving in mirror we need a mirror that will form virtual image of greater size

So here correct answer would be

A concave mirror is used.

for this purpose the person should be closer to mirror as we know that image will be virtual and magnified only when the object is between focus and pole of the mirror

here are some information of the future of geothermal energy:

-the future of geothermal energy can pretty much be summed up with a single word: more

-scientists plan in going deeper than 120 meters

-we are hoping that one day, we will get all of our energy from renewable energy sources such as geothermal energy

hope this !

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards