123
Q:

# Rain drops acquire spherical shape due to

 A) viscosity B) surface tension C) friction D) elasticity

Answer:   B) surface tension

Explanation:

The Surface tension pulls the surface of the drop equally at all points thus produces the spherical shape having the minimum surface area. This surface tension is the "skin" of a body of water that makes the molecules stick together.

Subject: Physics
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Q:

What is the noise level of normal conversation?

 A) About 60 dB B) About 70 dB C) About 80 dB D) About 90 dB

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

3 300
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

0 8944
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

2 314
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.

Answer & Explanation Answer: B) Cloud volume and speed

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

1 3615
Q:

What is the standard room temperature in Kelvin?

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

Answer & Explanation Answer: A) 98 K

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 2138
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

Answer & Explanation Answer: C) 32 m/s

Explanation:

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams

1 240
Q:

1 watt is equal to 1 ____________

 A) J s-1 B) J s C) J s-2 D) J

Answer & Explanation Answer: A) J s-1

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

2 3945
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