Class 12 Physics Chapter 6: Orthographic Projection of Right Regular Solids NCERT Solutions

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Complete Chapter Solutions

Q 6.1

Project the front view and top view of a square prism of 35 mm base edges and 50 mm vertical height, resting on H.P., with two vertical rectangular faces parallel to V.P.

Q 6.2

A triangular prism of 40 mm base edges and 60 mm height stands on H.P. with one vertical rectangular face at the rear, parallel to V.P. Draw its projections.

Q 6.3

Draw the projections of a cylinder resting on H.P. on its base, with 30 mm base diameter and 40 mm long axis.

Q 6.4

Project the front view and top view of a hemisphere resting on H.P. with its circular face on top. Diameter is 60 mm.

Q 6.5

Project the front view and top view of the frustum of a hexagonal pyramid, 25 mm base edges and 70 mm height, cut at mid-height parallel to its base.

Q 6.6

Project the front view and top view of a hollow cylinder having outer diameter 50 mm, inner diameter 40 mm and length 50 mm, resting on H.P. with its axis perpendicular to V.P.

Q 6.7

A triangular pyramid of 50 mm base and 50 mm axis rests on its base corner on H.P., so that the upper edge of the base is horizontal. The base is at the rear and parallel to V.P. Draw projections.

Q 6.8

Project the front view and top view of a pentagonal prism of 30 mm base edges and 60 mm long edges perpendicular to V.P., with its rectangular face on top parallel to H.P.

Q 6.9

A frustum of a square pyramid of 40 mm base edges and 20 mm top edges rests on H.P. on a base edge. Its 50 mm axis is horizontal and at right angles to V.P.; the cut face is in front. Draw projections.

Q 6.10

A hexagonal prism of 25 mm base edge and 60 mm axis rests on one base edge on H.P. and its axis is perpendicular to V.P. Project its front view and top view.

Q 6.11

Project the front view and top view of a cylinder with base diameter 50 mm and height 70 mm, resting on H.P., with its axis perpendicular to V.P.

Q 6.12

Draw the front view and top view of a cone of base diameter 30 mm and axis 65 mm, with its axis perpendicular to V.P., keeping the vertex in front.

Q 6.13

A square prism, base 40 mm side and axis 70 mm long, lies on one rectangular face. Its axis is perpendicular to V.P. Draw its front view and top view.

Q 6.14

The frustum of a triangular pyramid of 50 mm base edge and 20 mm top edge rests on H.P. with its base edge on it. The 60 mm axis is parallel to H.P. and at right angles to V.P. The cut face is in front. Project its views.

Q 6.15

A right regular pentagonal pyramid of base edge 25 mm and height 60 mm has its axis perpendicular to V.P. and its base parallel to V.P. Draw its projections.

Q 6.16

A hexagonal prism, base 25 mm side and axis 60 mm long, lies on the ground on one face with the axis parallel to both V.P. and H.P. Draw projections.

Q 6.17

A triangular pyramid, base 25 mm side and axis 50 mm long, rests on the ground on one base edge. Its axis is parallel to both planes. Draw projections.

Q 6.18

A cylinder, base 40 mm diameter and axis 60 mm long, lies on the ground on its generators with the axis parallel to both V.P. and H.P. Draw projections.

Q 6.19

A frustum of a hexagonal pyramid of 20 mm base edges and 10 mm top edges rests on H.P. on a base edge with its 50 mm axis horizontal and parallel to V.P. The cut top face is in front. Draw projections.

Q 6.20

A triangular prism with 25 mm edges at its base and axis 60 mm long rests on one base edge with axis parallel to V.P. and inclined at \(30^\circ\) to H.P. Draw projections.

Q 6.21

A pentagonal pyramid of 25 mm base edges and 50 mm axis has its axis perpendicular to V.P. and 50 mm above H.P. Draw projections if one base edge is inclined at \(30^\circ\) to H.P.

Q 6.22

A frustum of square pyramid of 20 mm top edges, 40 mm bottom edges and 50 mm axis has its side face inclined at \(45^\circ\) to H.P. with axis parallel to V.P. Draw projections.

Q 6.23

The frustum of a cone has 90 mm base diameter and 30 mm top diameter. Draw projections when its axis is parallel to V.P. and inclined at \(30^\circ\) to H.P.

Q 6.24

The frustum of a cone has 90 mm base diameter and 30 mm top diameter. Draw projections when its axis is parallel to V.P. and inclined at \(60^\circ\) to H.P.

Q 6.25

Draw the projections of a pentagonal prism having 25 mm edge of its base and axis 50 mm long when it is resting on its base with an edge of its base inclined at \(30^\circ\) to V.P.

Q 6.26

A triangular pyramid of 50 mm base edges and 60 mm axis has one base corner touching V.P., with axis parallel to H.P. and inclined at \(45^\circ\) to V.P. Draw projections.

Q 6.27

A frustum of a cone of 40 mm base diameter and 20 mm cut-face diameter rests on H.P. Its 50 mm axis is parallel to H.P. and inclined to V.P. at \(30^\circ\) towards right. Project top view and front view.

Q 6.28

A square duct is a frustum of a square pyramid. The top and bottom sides are 90 mm and 60 mm, and the length is 110 mm. Its axis is parallel to H.P. and inclined at \(60^\circ\) to V.P. Draw projections, neglecting sheet thickness.

Q 6.29

Draw projections of a square prism having 30 mm base edge and 55 mm axis when it rests on its base with its axis inclined at \(30^\circ\) to V.P.

Q 6.30

Draw projections of a hexagonal prism having 20 mm base edge and 50 mm axis when it rests on its base, with axis parallel to H.P. and inclined at \(40^\circ\) to V.P.

Q 6.31

A triangular prism of 50 mm base edges and 60 mm axis rests on its base and has its axis inclined at \(45^\circ\) to V.P. Draw projections.

Q 6.32

A hexagonal pyramid of 25 mm base edges and 60 mm axis rests on its base and has its axis inclined to V.P. at \(30^\circ\). Draw its projections.