Force — Physics STD 10 — Question

Asertion (A): The base of a cooking pan is made thick.
Reason (R): Its heat capacity becomes large due to which it gets heated slowly and imparts sufficient heat energy at a slow rate to the food for its proper cooking.

Where should an object be placed in front of a convex lens so as to form an upright and enlarged image?

An electrical appliance has a rating 100 W, 120V. The resistance of element of appliance when in use:

According to old convention, the colour of neutral wire is:

The radiation which affects the photographic plate most is :

Two sound waves X and Y have same amplitude and same wave pattern, but their frequencies are 60 Hz and 120 Hz respectively, then:

In a step up transformer:

The mechanical advantage of an ideal single movable pulley is ________ .