An object is placed 35 cm away from a convex mirror with ...
An object is placed 35 cm away from a convex mirror with a focal length of magnitude 15 cm. What is the location of the image?
26.25 cm behind the mirror
10.5 cm behind the mirror
26.25 cm in front of the mirror
10.5 cm in front of the mirror
Correct answer is B
f= -15cm (diverging mirror); u=35cm; v=?
⇒\(\frac{1}{f}\) = \(\frac{1}{u}\) + \(\frac{1}{v}\)
⇒ \(\frac{1}{-15}\) = \(\frac{1}{35}\) + \(\frac{1}{v}\)
⇒ \(\frac{1}{15}\) - \(\frac{1}{35}\) = \(\frac{1}{v}\)
⇒ \(\frac{-2}{21}\) = \(\frac{1}{v}\)
= \(\frac{-21}{2}\) = -10.5cm
∴The image is 10.5cm behind the mirror
The sagging of overhead electrical cables is the consequence of ...
An explosion occurs at an altitude of 312 m above the ground. If the air temperature is -10.00°C...
At reasonance, the phase angle in an a.c. circuit is ...
Which of the following machines does not apply the lever principle? ...
In an elastic collision, momentum is conserved as well as well as? ...
Which of the following is correct about light and sound waves? ...