A point source of 100 W emits light with 5% efficiency. At a distance of 5 m from the source,
January 15, 2025
Description A point source of 100 W emits light with 5% efficiency. At a ... Read more
A light ray is moving from A to B, separated by a distance d in vacuum. There is a
January 15, 2025
Description A light ray is moving from A to B, separated by a distance ... Read more
Average force exerted on a non-reflecting surface at normal incidence is 2.4 × 10 − 4 N . If 360
January 15, 2025
Description Average force exerted on a non-reflecting surface at normal incidence is 2.4 × ... Read more
A potential divider circuit is connected with a dc source of 20 V, a light emitting diode of glow in voltage 1.8 V and a zener diode of breakdown voltage of 3.2 V. The length (PR) of the resistive wire is 20 cm. The minimum length of PQ to just glow the LED is …………. cm
December 13, 2024
Description A potential divider circuit is connected with a dc source of 20 V, ... Read more
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