A telescope with objective of focal length 60 cm

Asked by admin @ 20/08/2021 in Physics viewed by 279 People

A telescope with objective of focal length 60 cm and eyepiece of focal length 5 centimetre is focused on a far distance object such that the parallel rays emerge from the eyepiece if object subtends an angle of 2 degree on objective then angular width of the images

Answered by admin @ 20/08/2021

24 degree is the answer

The mean length of an object is 5 cm

Asked by admin @ 11/08/2021 in Physics viewed by 347 persons

The mean length of an object is 5 cm. Which of the following measurements is most accurate? (a) 4.9 cm (b) 4.805 cm (c) 5.25 cm (d) 5.4 cm

An object 5 cm in length is held 25cm

Asked by admin @ 11/08/2021 in Physics viewed by 361 persons

an object 5 cm in length is held 25cm away from a converging lens of focal length 10cm draw the ray diagram and find position,size and the nature of the …

A convex lens of focal length 25 cm

Asked by admin @ 31/08/2021 in Physics viewed by 322 persons

A convex lens of focal length 25cm and a concave lens of focal length 10cm are placed in close contact with each other. Calculate the lens power of this combination.

A concave lens of focal length 15 cm

Asked by admin @ 24/08/2021 in Physics viewed by 337 persons

a concave lens of focal length 15 cm forms an image 10cm from the lens. how far is the object placed from the lens draw the ray diagram

Power of convex lens of focal length 50 cm is

Asked by admin @ 06/08/2021 in Physics viewed by 360 persons

The focal length of a convex lens is 50 cm. what is its power?

A convex lens has 20 cm focal length in air

Asked by admin @ 04/08/2021 in Physics viewed by 291 persons

A convex lens has 20 cm focal length in air. What is its focal length in water? (Refractive index of air-water = 1.33, refractive index of air-glass = 1.5).

A 5 cm tall object is placed perpendicular

Asked by admin @ 31/08/2021 in Physics viewed by 300 persons

. A 5 cm tall object is placed perpendicular to the principal axis of a convex lens of focal- length 20 cm. The distance of the object from the len …

A 2 cm tall object is placed perpendicular

Asked by admin @ 31/08/2021 in Physics viewed by 280 persons

A 2 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm. The distance of the object from the lens is …

An object 5cm in length is held 25cm

Asked by admin @ 29/08/2021 in Physics viewed by 247 persons

an object 5 cm in length is held 25cm away from a converging lens of focal length 10cm draw the ray diagram and find position,size and the nature of the …

A 6 cm tall object is placed perpendicular

Asked by admin @ 29/08/2021 in Physics viewed by 280 persons

a 6 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 15cm .the distance of the object from the lens is 10cm. …

A 2.0 cm tall object is placed perpendicular

Asked by admin @ 29/08/2021 in Physics viewed by 300 persons

A 2 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 10 cm. The distance of the object from the lens is …

Relationship between focal length and radius of curvature

Asked by admin @ 29/08/2021 in Physics viewed by 268 persons

Write relation between focal length and radius of curvature answer

A long metal bar of 30 cm length

Asked by admin @ 29/08/2021 in Physics viewed by 295 persons

A long metal bar of 30 cm length is aligned along a north south line and moves eastward at a speed of 10 ms1. A uniform magnetic field of 4.0 …

For a concave mirror of focal length 20cm

Asked by admin @ 25/08/2021 in Physics viewed by 290 persons

A concave mirror of focal length 20cm produces an image twice the height of an object .if the image is real ,then the distance of the object from the mirror …