Categorize the objects shown above as luminous and non-luminous objects.

A luminous object

Give two examples of Non-luminous objects

Living and non-living objects of nature

Give two examples of Luminous objects

Dimensions of luminous flux are

A source emits 12.0 J of lightof wavelength 620 nm and 8.0 J of light of wavelength 580 nm per second. The relative luminosilty at 620 is 25% and that at 580 nm is 80%. Find a the total radiant flux, b. the total luminous flux and c. and luminous efficiency.

Benzene burns with a luminous flame.

A cubical block of glass, refractive index 1.5, has a spherical cavity of radius r=9cm inside it as shown in figure . A luminous point object O is at a distance of 18cm from the cube. What is the apparent position of O as seen from A?

The velocity-time graph of an object is shown below. The acceleration of the object is

Which of the following is correct about non-living objects?