What is the principal focus of a spherical mirror?

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

Answer & Explanation Answer: A) About 60 dB

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

3 504

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:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

0 18025

Q:

Due to an acceleration of 1 $m / s^{2}$ , 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

Answer & Explanation Answer: B) 37.5

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

3 562

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:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

1 7265

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:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

0 7575

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:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: AIEEE , Bank Exams

1 465

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:

Report Error

View Answer Report Error Discuss

Filed Under: Physics
Exam Prep: Bank Exams

2 8131

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

A) It is a point from which the rays of light appear to be coming from on the principal axis of a convex mirror	B) It is the point on the principal axis through which rays of light parallel to the principal axis pass after reflection or appear to be arising from this point on the principal axis
C) It is the centre of a hollow sphere of which the spherical mirror is a part	D) It is the midpoint of a spherical mirror

Quick Links