8 9 (8 7) 6 2 2 6 3 2 6 9 7 3 2 (8 7) 2 7 7 (8 7) 2 3 7 7 9 4 Answer is three (option B).
A concave lens has a focal length 15 cm. If the object is placed at 30 cm from the lens, what is the image distance?
What is the audible frequency range?
A dynamo is primarily used to convert:
Which of the following is/are NOT scalar quantities?
This relationship between the angles of incidence and refraction and the indices of refraction of the two media is known as ________.
Which device uses ultrasonic waves for getting images of internal organs of human body?
What is the term for the center of the reflecting surface of a spherical mirror?
For which type of motion, the distance time graph is not a straight line and can be any kind of curve?
Electrical fuse is used to interrupt excess of _________.
Who is known as the 'Father of Nuclear Physics'?
