Light – Reflection and Refraction — Science STD 10 — Question

Write down the formula for the heat produced when a current I is passed through a resistor R for time.

For Fleming’s left-hand rule, write down the three things that are 90° to each other, and next to each one write down the finger or thumb that represents it.

Define the term “power of accommodation” of human eye?

Name the process which is involved in the formation of a rainbow.

Which one of these circumstances enables a concave mirror to be used as a shaving mirror?

Describe how you will locate a current-carrying wire concealed in a wall.

What is the far point of a person suffering from myopia (or short-sightedness)?

In a d.c. motor, why must the current to the coil be reversed twice during each rotation?

Name the defect of vision in a person:
Whose far point is less than infinity.

Out of rods and cones in the retina of your eye:

Which work in dim light?