Light Chapter15 Science (Class 7)

Name the type of lens which diverges a beam of parallel rays of light.

• Convex lens

• Concave lens

• Both of these

• None of these

Select the correct properties of image formed on a spherical mirror if object is placed at C.

• Real

• Virtual

• Erect

• Inverted

• At F

Rohan is provided with a concave and convex mirrors & concave and convex lens. He wants an enlarged image. He can either use:

• concave mirror or concave lens

• concave mirror or convex lens

• convex mirror or convex lens

• convex mirror or concave lens

Can you name the mirrors used as side mirrors in scooters?

(a)  

Uneven surfaces show ________ reflection.

• regular

• perfect

• irregular

• informal

Laws of (a)   is applicable while playing back shots in a carom board.

A concave mirror converges light rays. The converged rays meet at a point called (a)   .

Changing of right side to left side is called (a)   .

The inner surface of a reflector of a torch is a (a)   mirror.

If the object is placed at F, where will be the image?

• at F

• at infinity

• at C

• between F and C