4
Q:

# A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity  water rises in the tube. The height of water rise in the tube can be increased by

 A) decreasing the radius of the capillary tube B) increasing the radius of the capillary tube C) increasing the height of water in the vessel D) None of these

Explanation:

The water rise in a capillary tube dipped in water is such that the weight of water in the tube above the surface of water in the vessel is equal to (balances) the upward force due to surface tension. So it is clear that if the the bore (radius) to the tube is decreased, the height of the water column in it must be greater.  So, (a) is correct.

Subject: Physics
Q:

What is the noise level of normal conversation?

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

3 691
Q:

As an object falls freely its ___________________.

 A) kinetic energy gets converted into potential energy B) potential energy gets converted into kinetic energy C) momentum gets converted into gravitational force D) gravitational force gets converted into momentum

Answer & Explanation Answer: B) potential energy gets converted into kinetic energy

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

6 28720
Q:

Due to an acceleration of 1  $m/s2$, the velocity of a body increases from 5 m/s to 10 m/s in a certain period. Find the displacement (in m) of the body in  that period.

 A) 125 B) 37.5 C) 62.5 D) 75

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

4 882
Q:

What is measured with the Nephometer?

 A) volume of rainfall B) Cloud volume and speed C) Salinity of Sea D) All options are correct.

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

1 11350
Q:

What is the standard room temperature in Kelvin?

 A) 98 K B) 198 K C) 273 K D) 373 K

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

8 311894
Q:

An object, starting from rest, moves with constant acceleration of 4 m/s2. After 8 s, its speed is

 A) 16 m/s B) 8 m/s C) 32 m/s D) 4 m/s

Explanation:

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams

1 693
Q:

1 watt is equal to 1 ____________

 A) J s-1 B) J s C) J s-2 D) J

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

2 13928
Q:

A body is initially moving with a velocity of 10 m/s. It undergoes an acceleration of 2 m/s2 for 5 seconds. Find the displacement (in m) of this body in these 5 seconds.

 A)  25 B)  37.5 C)  50 D)  75