A glass flask weighing 390 g having internal volume 500 cc just floats

A Glass Flask Weighing 390 G Having Internal Volume 500 Physics Question

A glass flask weighing 390 g having internal volume 500 cc just floats when half of it is filled with water. Specific gravity of the glass is

Options

(a) 2.8
(b) 1.8
(c) 1
(d) 2.5

Correct Answer:

2.8

Explanation:

Weight of the flask + 250 c.c. of water is balanced by V₂ gm of water.

Where V₂ is the external volume.

.·. (390 + 250)g = V₂ × 1 × g ⇒ V₂ = 640 c.c.

.·. Volume of the material = (640 – 500) c.c. = 140 c.c.

.·. Density of glass = 390 g / 140 c.c. = 2.8 g/c.c.

i.e. Specific gravity = 2.8

Related Questions:

  1. The primary of a transformer when connected to a dc battery of 10 volt draws a current
  2. A n-p-n transistor is connected in common emitter configuration in a given amplifier.
  3. When a ceiling fan is switched off its angular velocity reduces to 50% while
  4. In Young’s double slit experiment, the slit seperation is 1 mm and the screen
  5. The coefficient of friction between the tyres and the road is 0.25. The maximum speed

Topics: Properties of Bulk Matter (130)
Subject: Physics (2479)

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*