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2 years ago

Which type of force pulls objects toward one another

Physics

2 answers:

Klio2033 [76]2 years ago

4 0

Gravity ALWAYS does that, and electrostatic force does it when two objects have opposite charges.

abruzzese [7]2 years ago

3 0

Gravitational force, magnetic force and electric force

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2 years ago

After a check up, a person now has a far point of 100 cm, but with good near point vision. He needs to wear a new pair of correc

lakkis [162]

Answer:

so his far point according to this pair of glass is 200 cm

Explanation:

power of old pair of corrective glasses is given as

$P = -0.5 dioptre$

now we have

$f = \frac{1}{P}$

$f = -2 m$

$f = -200 cm$

now we know that for normal vision the maximum distance of vision is for infinite distance

so by lens formula we have

$\frac{1}{d_i} + \frac{1}{d_o} = \frac{1}{f}$

$\frac{1}{d_i} + 0 = \frac{1}{200}$

$d_i = 200 cm$

so his far point according to this pair of glass is 200 cm

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